31240331321120 has 48 divisors (see below), whose sum is σ = 73807532890560. Its totient is φ = 12495751551744.

The previous prime is 31240331321093. The next prime is 31240331321137. The reversal of 31240331321120 is 2112313304213.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31240331321120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2317391 + ... + 8237169.

It is an arithmetic number, because the mean of its divisors is an integer number (1537656935220).

Almost surely, 2^{31240331321120} is an apocalyptic number.

It is an amenable number.

31240331321120 is an abundant number, since it is smaller than the sum of its proper divisors (42567201569440).

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

31240331321120 is a wasteful number, since it uses less digits than its factorization.

31240331321120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5952777 (or 5952769 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31240331321120 its reverse (2112313304213), we get a palindrome (33352644625333).

The spelling of 31240331321120 in words is "thirty-one trillion, two hundred forty billion, three hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty".