31500100412 has 48 divisors (see below), whose sum is σ = 61868517984. Its totient is φ = 13908864000.

The previous prime is 31500100381. The next prime is 31500100421. The reversal of 31500100412 is 21400100513.

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, 382862 + ... + 457802.

It is an arithmetic number, because the mean of its divisors is an integer number (1288927458).

Almost surely, 2^31500100412 is an apocalyptic number.

It is an amenable number.

31500100412 is a deficient number, since it is larger than the sum of its proper divisors (30368417572).

31500100412 is a wasteful number, since it uses less digits than its factorization.

31500100412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75230 (or 75228 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 31500100412 its reverse (21400100513), we get a palindrome (52900200925).

The spelling of 31500100412 in words is "thirty-one billion, five hundred million, one hundred thousand, four hundred twelve".