31323322312 has 32 divisors (see below), whose sum is σ = 61653369600. Its totient is φ = 14899550400.

The previous prime is 31323322297. The next prime is 31323322313. The reversal of 31323322312 is 21322332313.

It is a super-2 number, since 2×31323322312² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31323322313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1055739 + ... + 1085002.

It is an arithmetic number, because the mean of its divisors is an integer number (1926667800).

Almost surely, 2^31323322312 is an apocalyptic number.

It is an amenable number.

31323322312 is a deficient number, since it is larger than the sum of its proper divisors (30330047288).

31323322312 is a wasteful number, since it uses less digits than its factorization.

31323322312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140837 (or 2140833 counting only the distinct ones).

The product of its digits is 3888, while the sum is 25.

Adding to 31323322312 its reverse (21322332313), we get a palindrome (52645654625).

The spelling of 31323322312 in words is "thirty-one billion, three hundred twenty-three million, three hundred twenty-two thousand, three hundred twelve".