Number of the day: 71311

Properties of the number 71311:

71311 is a cyclic number.
71311 = 29 × 2459 is semiprime and squarefree.
71311 has 2 distinct prime factors, 4 divisors, 27 antidivisors and 68824 totatives.
71311 has an emirp digit sum 13 in base 10.
71311 has a Fibonacci digit sum 13 in base 10.
71311 has a semiprime digit product 21 in base 10.
71311 has a Fibonacci digit product 21 in base 10.
71311 has a triangular digit product 21 in base 10.
Reversing the decimal digits of 71311 results in a prime.
71311 = 35656² - 35655² = 1244² - 1215² is the difference of 2 nonnegative squares in 2 ways.
71311 is the sum of 2 positive triangular numbers.
71311 is the difference of 2 positive pentagonal numbers in 2 ways.
71311 is not the sum of 3 positive squares.
71311² = 49180² + 51639² is the sum of 2 positive squares in 1 way.
71311² is the sum of 3 positive squares.
71311 is a proper divisor of 59¹²²⁹ - 1.
71311 = '71' + '311' is the concatenation of 2 emirps.
71311 is an emirpimes in (at least) the following bases: 5, 7, 9, 14, 15, 21, 23, 25, 26, 28, 29, 31, 33, 34, 35, 36, 37, 38, 39, 47, 55, 56, 61, 63, 65, 68, 69, 71, 79, 83, 85, 89, 93, 95, 96, 97, and 100.
71311 is palindromic in (at least) the following bases: -48, -53, and -56.
71311 in base 44 = aaV and consists of only the digits 'V' and 'a'.
71311 in base 52 = QJJ and consists of only the digits 'J' and 'Q'.
71311 in base 54 = OOV and consists of only the digits 'O' and 'V'.
71311 in base 55 = NVV and consists of only the digits 'N' and 'V'.