71062631 has 2 divisors, whose sum is σ = 71062632. Its totient is φ = 71062630.

The previous prime is 71062627. The next prime is 71062639. The reversal of 71062631 is 13626017.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71062631 - 2² = 71062627 is a prime.

It is a super-2 number, since 2×71062631² = 10099795049284322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71062631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71062639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35531315 + 35531316.

It is an arithmetic number, because the mean of its divisors is an integer number (35531316).

Almost surely, 2^71062631 is an apocalyptic number.

71062631 is a deficient number, since it is larger than the sum of its proper divisors (1).

71062631 is an equidigital number, since it uses as much as digits as its factorization.

71062631 is an odious number, because the sum of its binary digits is odd.

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

The square root of 71062631 is about 8429.8654200408. The cubic root of 71062631 is about 414.2034966962.

Adding to 71062631 its reverse (13626017), we get a palindrome (84688648).

The spelling of 71062631 in words is "seventy-one million, sixty-two thousand, six hundred thirty-one".