31310312604 has 24 divisors (see below), whose sum is σ = 75414087168. Its totient is φ = 10100100720.

The previous prime is 31310312599. The next prime is 31310312641. The reversal of 31310312604 is 40621301313.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 42083382 + ... + 42084125.

It is an arithmetic number, because the mean of its divisors is an integer number (3142253632).

Almost surely, 2^31310312604 is an apocalyptic number.

It is an amenable number.

31310312604 is an abundant number, since it is smaller than the sum of its proper divisors (44103774564).

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

31310312604 is a wasteful number, since it uses less digits than its factorization.

31310312604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84167545 (or 84167543 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31310312604 its reverse (40621301313), we get a palindrome (71931613917).

The spelling of 31310312604 in words is "thirty-one billion, three hundred ten million, three hundred twelve thousand, six hundred four".