31309309230912 has 84 divisors (see below), whose sum is σ = 89745581723616. Its totient is φ = 10436075915520.

The previous prime is 31309309230911. The next prime is 31309309230931. The reversal of 31309309230912 is 21903290390313.

31309309230912 is a `hidden beast` number, since 3 + 1 + 30 + 9 + 309 + 2 + 309 + 1 + 2 = 666.

It is a super-3 number, since 3×31309309230912³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31309309230911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16016653 + ... + 17864819.

It is an arithmetic number, because the mean of its divisors is an integer number (1068399782424).

Almost surely, 2^{31309309230912} is an apocalyptic number.

31309309230912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31309309230912 is an abundant number, since it is smaller than the sum of its proper divisors (58436272492704).

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

31309309230912 is a wasteful number, since it uses less digits than its factorization.

31309309230912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877596 (or 1877583 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 45.

The spelling of 31309309230912 in words is "thirty-one trillion, three hundred nine billion, three hundred nine million, two hundred thirty thousand, nine hundred twelve".