71907394031 has 16 divisors (see below), whose sum is σ = 79250546688. Its totient is φ = 64701050400.

The previous prime is 71907394007. The next prime is 71907394033. The reversal of 71907394031 is 13049370917.

It is a cyclic number.

It is not a de Polignac number, because 71907394031 - 2⁶ = 71907393967 is a prime.

It is a super-2 number, since 2×71907394031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71907394033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527006 + ... + 649268.

It is an arithmetic number, because the mean of its divisors is an integer number (4953159168).

Almost surely, 2^71907394031 is an apocalyptic number.

71907394031 is a deficient number, since it is larger than the sum of its proper divisors (7343152657).

71907394031 is a wasteful number, since it uses less digits than its factorization.

71907394031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122822.

The product of its (nonzero) digits is 142884, while the sum is 44.

The spelling of 71907394031 in words is "seventy-one billion, nine hundred seven million, three hundred ninety-four thousand, thirty-one".