31113233312 has 24 divisors (see below), whose sum is σ = 70004775456. Its totient is φ = 13334242752.

The previous prime is 31113233287. The next prime is 31113233321. The reversal of 31113233312 is 21333231113.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 69448958 + ... + 69449405.

It is an arithmetic number, because the mean of its divisors is an integer number (2916865644).

Almost surely, 2^31113233312 is an apocalyptic number.

31113233312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31113233312 is an abundant number, since it is smaller than the sum of its proper divisors (38891542144).

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

31113233312 is a wasteful number, since it uses less digits than its factorization.

31113233312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138898380 (or 138898372 counting only the distinct ones).

The product of its digits is 972, while the sum is 23.

Adding to 31113233312 its reverse (21333231113), we get a palindrome (52446464425).

The spelling of 31113233312 in words is "thirty-one billion, one hundred thirteen million, two hundred thirty-three thousand, three hundred twelve".