31310022112 has 12 divisors (see below), whose sum is σ = 61641606096. Its totient is φ = 15655011040.

The previous prime is 31310022013. The next prime is 31310022113. The reversal of 31310022112 is 21122001313.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31310022113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489219064 + ... + 489219127.

It is an arithmetic number, because the mean of its divisors is an integer number (5136800508).

Almost surely, 2^31310022112 is an apocalyptic number.

31310022112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31310022112 is a deficient number, since it is larger than the sum of its proper divisors (30331583984).

31310022112 is an equidigital number, since it uses as much as digits as its factorization.

31310022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978438201 (or 978438193 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31310022112 its reverse (21122001313), we get a palindrome (52432023425).

The spelling of 31310022112 in words is "thirty-one billion, three hundred ten million, twenty-two thousand, one hundred twelve".