31031131100312 has 32 divisors (see below), whose sum is σ = 66508368585120. Its totient is φ = 13296438654720.

The previous prime is 31031131100297. The next prime is 31031131100323. The reversal of 31031131100312 is 21300113113013.

It is a congruent number.

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, 54244823 + ... + 54813894.

It is an arithmetic number, because the mean of its divisors is an integer number (2078386518285).

Almost surely, 2^{31031131100312} is an apocalyptic number.

It is an amenable number.

31031131100312 is an abundant number, since it is smaller than the sum of its proper divisors (35477237484808).

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

31031131100312 is a wasteful number, since it uses less digits than its factorization.

31031131100312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109063811 (or 109063807 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 31031131100312 its reverse (21300113113013), we get a palindrome (52331244213325).

The spelling of 31031131100312 in words is "thirty-one trillion, thirty-one billion, one hundred thirty-one million, one hundred thousand, three hundred twelve".