31332123312 has 60 divisors (see below), whose sum is σ = 94156234776. Its totient is φ = 8952034560.

The previous prime is 31332123307. The next prime is 31332123341. The reversal of 31332123312 is 21332123313.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6658389 + ... + 6663092.

Almost surely, 2^31332123312 is an apocalyptic number.

It is an amenable number.

31332123312 is an abundant number, since it is smaller than the sum of its proper divisors (62824111464).

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

31332123312 is a wasteful number, since it uses less digits than its factorization.

31332123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13321506 (or 13321493 counting only the distinct ones).

The product of its digits is 1944, while the sum is 24.

Adding to 31332123312 its reverse (21332123313), we get a palindrome (52664246625).

Subtracting from 31332123312 its reverse (21332123313), we obtain a palindrome (9999999999).

It can be divided in two parts, 313321 and 23312, that added together give a palindrome (336633).

The spelling of 31332123312 in words is "thirty-one billion, three hundred thirty-two million, one hundred twenty-three thousand, three hundred twelve".