31368402318 has 64 divisors (see below), whose sum is σ = 69034291200. Its totient is φ = 9423358560.

The previous prime is 31368402311. The next prime is 31368402323. The reversal of 31368402318 is 81320486313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31368402311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4504123 + ... + 4511081.

It is an arithmetic number, because the mean of its divisors is an integer number (1078660800).

Almost surely, 2^31368402318 is an apocalyptic number.

31368402318 is an abundant number, since it is smaller than the sum of its proper divisors (37665888882).

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

31368402318 is a wasteful number, since it uses less digits than its factorization.

31368402318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7557.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 31368402318 in words is "thirty-one billion, three hundred sixty-eight million, four hundred two thousand, three hundred eighteen".