31311013002112 has 16 divisors (see below), whose sum is σ = 62377408715400. Its totient is φ = 15655506500992.

The previous prime is 31311013002083. The next prime is 31311013002133. The reversal of 31311013002112 is 21120031011313.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 31311013002112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122308644412 + ... + 122308644667.

Almost surely, 2^{31311013002112} is an apocalyptic number.

31311013002112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31311013002112 is a deficient number, since it is larger than the sum of its proper divisors (31066395713288).

31311013002112 is an equidigital number, since it uses as much as digits as its factorization.

31311013002112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244617289093 (or 244617289081 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 31311013002112 its reverse (21120031011313), we get a palindrome (52431044013425).

The spelling of 31311013002112 in words is "thirty-one trillion, three hundred eleven billion, thirteen million, two thousand, one hundred twelve".