31331054412 has 72 divisors (see below), whose sum is σ = 90537038592. Its totient is φ = 8949247200.

The previous prime is 31331054407. The next prime is 31331054431. The reversal of 31331054412 is 21445013313.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1015737 + ... + 1046127.

Almost surely, 2^31331054412 is an apocalyptic number.

It is an amenable number.

31331054412 is an abundant number, since it is smaller than the sum of its proper divisors (59205984180).

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

31331054412 is a wasteful number, since it uses less digits than its factorization.

31331054412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34499 (or 34494 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 31331054412 its reverse (21445013313), we get a palindrome (52776067725).

The spelling of 31331054412 in words is "thirty-one billion, three hundred thirty-one million, fifty-four thousand, four hundred twelve".