31112301312 has 72 divisors (see below), whose sum is σ = 92004568880. Its totient is φ = 10370764800.

The previous prime is 31112301299. The next prime is 31112301331. The reversal of 31112301312 is 21310321113.

31112301312 is a `hidden beast` number, since 311 + 12 + 30 + 1 + 312 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 2243689 + ... + 2257512.

Almost surely, 2^31112301312 is an apocalyptic number.

31112301312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31112301312 is an abundant number, since it is smaller than the sum of its proper divisors (60892267568).

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

31112301312 is an equidigital number, since it uses as much as digits as its factorization.

31112301312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501226 (or 4501206 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31112301312 its reverse (21310321113), we get a palindrome (52422622425).

The spelling of 31112301312 in words is "thirty-one billion, one hundred twelve million, three hundred one thousand, three hundred twelve".