31312312300 has 18 divisors (see below), whose sum is σ = 67947717908. Its totient is φ = 12524924880.

The previous prime is 31312312261. The next prime is 31312312319. The reversal of 31312312300 is 321321313.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156561462 + ... + 156561661.

Almost surely, 2^31312312300 is an apocalyptic number.

It is an amenable number.

31312312300 is an abundant number, since it is smaller than the sum of its proper divisors (36635405608).

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

31312312300 is a wasteful number, since it uses less digits than its factorization.

31312312300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313123137 (or 313123130 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31312312300 its reverse (321321313), we get a palindrome (31633633613).

The spelling of 31312312300 in words is "thirty-one billion, three hundred twelve million, three hundred twelve thousand, three hundred".