31320321404120 has 256 divisors, whose sum is σ = 84258546278400. Its totient is φ = 10252408320000.

The previous prime is 31320321404069. The next prime is 31320321404143. The reversal of 31320321404120 is 2140412302313.

It is a self number, because there is not a number n which added to its sum of digits gives 31320321404120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 246283511 + ... + 246410649.

It is an arithmetic number, because the mean of its divisors is an integer number (329134946400).

Almost surely, 2^{31320321404120} 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 31320321404120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42129273139200).

31320321404120 is an abundant number, since it is smaller than the sum of its proper divisors (52938224874280).

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

31320321404120 is a wasteful number, since it uses less digits than its factorization.

31320321404120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127570 (or 127566 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31320321404120 its reverse (2140412302313), we get a palindrome (33460733706433).

The spelling of 31320321404120 in words is "thirty-one trillion, three hundred twenty billion, three hundred twenty-one million, four hundred four thousand, one hundred twenty".