31930953439 has 24 divisors (see below), whose sum is σ = 40938721488. Its totient is φ = 24624714240.

The previous prime is 31930953427. The next prime is 31930953473. The reversal of 31930953439 is 93435903913.

It is not a de Polignac number, because 31930953439 - 2⁹ = 31930952927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 31930953392 and 31930953401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31930953479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253084 + ... + 357649.

It is an arithmetic number, because the mean of its divisors is an integer number (1705780062).

Almost surely, 2^31930953439 is an apocalyptic number.

31930953439 is a deficient number, since it is larger than the sum of its proper divisors (9007768049).

31930953439 is a wasteful number, since it uses less digits than its factorization.

31930953439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610855 (or 610848 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 49.

The spelling of 31930953439 in words is "thirty-one billion, nine hundred thirty million, nine hundred fifty-three thousand, four hundred thirty-nine".