31312414240 has 96 divisors (see below), whose sum is σ = 80148942720. Its totient is φ = 11514015744.

The previous prime is 31312414229. The next prime is 31312414297. The reversal of 31312414240 is 4241421313.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16900 + ... + 250819.

It is an arithmetic number, because the mean of its divisors is an integer number (834884820).

Almost surely, 2^31312414240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31312414240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40074471360).

31312414240 is an abundant number, since it is smaller than the sum of its proper divisors (48836528480).

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

31312414240 is a wasteful number, since it uses less digits than its factorization.

31312414240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267794 (or 267786 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31312414240 its reverse (4241421313), we get a palindrome (35553835553).

The spelling of 31312414240 in words is "thirty-one billion, three hundred twelve million, four hundred fourteen thousand, two hundred forty".