31331313313322 has 32 divisors (see below), whose sum is σ = 51585582205440. Its totient is φ = 14153689217520.

The previous prime is 31331313313309. The next prime is 31331313313331. The reversal of 31331313313322 is 22331331313313.

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, 131282579 + ... + 131521017.

It is an arithmetic number, because the mean of its divisors is an integer number (1612049443920).

Almost surely, 2^{31331313313322} is an apocalyptic number.

31331313313322 is a deficient number, since it is larger than the sum of its proper divisors (20254268892118).

31331313313322 is a wasteful number, since it uses less digits than its factorization.

31331313313322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275258.

The product of its digits is 26244, while the sum is 32.

Adding to 31331313313322 its reverse (22331331313313), we get a palindrome (53662644626635).

Subtracting from 31331313313322 its reverse (22331331313313), we obtain a square (8999982000009 = 2999997²).

The spelling of 31331313313322 in words is "thirty-one trillion, three hundred thirty-one billion, three hundred thirteen million, three hundred thirteen thousand, three hundred twenty-two".