31431793396038 has 32 divisors (see below), whose sum is σ = 71855817949440. Its totient is φ = 8979047554080.

The previous prime is 31431793396021. The next prime is 31431793396057. The reversal of 31431793396038 is 83069339713413.

It is a super-2 number, since 2×31431793396038² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 60774633 + ... + 61289636.

It is an arithmetic number, because the mean of its divisors is an integer number (2245494310920).

Almost surely, 2^{31431793396038} is an apocalyptic number.

31431793396038 is an abundant number, since it is smaller than the sum of its proper divisors (40424024553402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31431793396038 is a wasteful number, since it uses less digits than its factorization.

31431793396038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122070412.

The product of its (nonzero) digits is 26453952, while the sum is 60.

The spelling of 31431793396038 in words is "thirty-one trillion, four hundred thirty-one billion, seven hundred ninety-three million, three hundred ninety-six thousand, thirty-eight".