31213122354 has 12 divisors (see below), whose sum is σ = 67628431806. Its totient is φ = 10404374112.

The previous prime is 31213122341. The next prime is 31213122377. The reversal of 31213122354 is 45322131213.

31213122354 is a `hidden beast` number, since 312 + 1 + 312 + 2 + 35 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21838041729 + 9375080625 = 147777^2 + 96825^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 867031159 + ... + 867031194.

Almost surely, 2^31213122354 is an apocalyptic number.

31213122354 is an abundant number, since it is smaller than the sum of its proper divisors (36415309452).

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

31213122354 is a wasteful number, since it uses less digits than its factorization.

31213122354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734062361 (or 1734062358 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

Adding to 31213122354 its reverse (45322131213), we get a palindrome (76535253567).

The spelling of 31213122354 in words is "thirty-one billion, two hundred thirteen million, one hundred twenty-two thousand, three hundred fifty-four".