31240320214312 has 32 divisors (see below), whose sum is σ = 63900870372000. Its totient is φ = 14200097688000.

The previous prime is 31240320214291. The next prime is 31240320214339. The reversal of 31240320214312 is 21341202304213.

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, 47536939 + ... + 48189637.

It is an arithmetic number, because the mean of its divisors is an integer number (1996902199125).

Almost surely, 2^{31240320214312} is an apocalyptic number.

It is an amenable number.

31240320214312 is an abundant number, since it is smaller than the sum of its proper divisors (32660550157688).

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

31240320214312 is a wasteful number, since it uses less digits than its factorization.

31240320214312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196617 (or 1196613 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31240320214312 its reverse (21341202304213), we get a palindrome (52581522518525).

The spelling of 31240320214312 in words is "thirty-one trillion, two hundred forty billion, three hundred twenty million, two hundred fourteen thousand, three hundred twelve".