31312311100 has 36 divisors (see below), whose sum is σ = 77654533264. Its totient is φ = 10735649280.

The previous prime is 31312311089. The next prime is 31312311127. The reversal of 31312311100 is 111321313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22365237 + ... + 22366636.

Almost surely, 2^31312311100 is an apocalyptic number.

It is an amenable number.

31312311100 is an abundant number, since it is smaller than the sum of its proper divisors (46342222164).

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

31312311100 is a wasteful number, since it uses less digits than its factorization.

31312311100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44731894 (or 44731887 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31312311100 its reverse (111321313), we get a palindrome (31423632413).

The spelling of 31312311100 in words is "thirty-one billion, three hundred twelve million, three hundred eleven thousand, one hundred".