31032222112 has 48 divisors (see below), whose sum is σ = 65805838560. Its totient is φ = 14357613312.

The previous prime is 31032222073. The next prime is 31032222139. The reversal of 31032222112 is 21122223013.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 31032222112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567343 + ... + 619630.

It is an arithmetic number, because the mean of its divisors is an integer number (1370954970).

Almost surely, 2^31032222112 is an apocalyptic number.

31032222112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31032222112 is an abundant number, since it is smaller than the sum of its proper divisors (34773616448).

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

31032222112 is a wasteful number, since it uses less digits than its factorization.

31032222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187045 (or 1187037 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31032222112 its reverse (21122223013), we get a palindrome (52154445125).

Subtracting from 31032222112 its reverse (21122223013), we obtain a palindrome (9909999099).

The spelling of 31032222112 in words is "thirty-one billion, thirty-two million, two hundred twenty-two thousand, one hundred twelve".