71314631 has 2 divisors, whose sum is σ = 71314632. Its totient is φ = 71314630.

The previous prime is 71314613. The next prime is 71314637. The reversal of 71314631 is 13641317.

Together with previous prime (71314613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71314631 - 2²² = 67120327 is a prime.

It is a super-2 number, since 2×71314631² = 10171553189332322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71314631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71314637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35657315 + 35657316.

It is an arithmetic number, because the mean of its divisors is an integer number (35657316).

Almost surely, 2^71314631 is an apocalyptic number.

71314631 is a deficient number, since it is larger than the sum of its proper divisors (1).

71314631 is an equidigital number, since it uses as much as digits as its factorization.

71314631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 71314631 is about 8444.7990503031. The cubic root of 71314631 is about 414.6925307593.

Adding to 71314631 its reverse (13641317), we get a palindrome (84955948).

The spelling of 71314631 in words is "seventy-one million, three hundred fourteen thousand, six hundred thirty-one".