31213314316 has 12 divisors (see below), whose sum is σ = 55164125520. Its totient is φ = 15452135600.

The previous prime is 31213314311. The next prime is 31213314343. The reversal of 31213314316 is 61341331213.

It is not an unprimeable number, because it can be changed into a prime (31213314311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38629936 + ... + 38630743.

It is an arithmetic number, because the mean of its divisors is an integer number (4597010460).

Almost surely, 2^31213314316 is an apocalyptic number.

It is an amenable number.

31213314316 is a deficient number, since it is larger than the sum of its proper divisors (23950811204).

31213314316 is a wasteful number, since it uses less digits than its factorization.

31213314316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77260784 (or 77260782 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

Adding to 31213314316 its reverse (61341331213), we get a palindrome (92554645529).

The spelling of 31213314316 in words is "thirty-one billion, two hundred thirteen million, three hundred fourteen thousand, three hundred sixteen".