31322311011320 has 128 divisors (see below), whose sum is σ = 81292725360000. Its totient is φ = 10639152064512.

The previous prime is 31322311011317. The next prime is 31322311011419. The reversal of 31322311011320 is 2311011322313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246202286 + ... + 246329474.

It is an arithmetic number, because the mean of its divisors is an integer number (635099416875).

Almost surely, 2^{31322311011320} 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 31322311011320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40646362680000).

31322311011320 is an abundant number, since it is smaller than the sum of its proper divisors (49970414348680).

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

31322311011320 is a wasteful number, since it uses less digits than its factorization.

31322311011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135385 (or 135381 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31322311011320 its reverse (2311011322313), we get a palindrome (33633322333633).

The spelling of 31322311011320 in words is "thirty-one trillion, three hundred twenty-two billion, three hundred eleven million, eleven thousand, three hundred twenty".