31322302213212 has 90 divisors (see below), whose sum is σ = 86419122277488. Its totient is φ = 9891253293552.

The previous prime is 31322302213187. The next prime is 31322302213273. The reversal of 31322302213212 is 21231220322313.

31322302213212 is a `hidden beast` number, since 3 + 1 + 3 + 2 + 230 + 2 + 213 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 133780228 + ... + 134014155.

Almost surely, 2^{31322302213212} is an apocalyptic number.

It is an amenable number.

31322302213212 is an abundant number, since it is smaller than the sum of its proper divisors (55096820064276).

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

31322302213212 is a wasteful number, since it uses less digits than its factorization.

31322302213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267794437 (or 267794407 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 31322302213212 its reverse (21231220322313), we get a palindrome (52553522535525).

The spelling of 31322302213212 in words is "thirty-one trillion, three hundred twenty-two billion, three hundred two million, two hundred thirteen thousand, two hundred twelve".