312013332120 has 128 divisors (see below), whose sum is σ = 1098672537600. Its totient is φ = 69389830656.

The previous prime is 312013332119. The next prime is 312013332131. The reversal of 312013332120 is 21233310213.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4988440 + ... + 5050599.

It is an arithmetic number, because the mean of its divisors is an integer number (8583379200).

Almost surely, 2^312013332120 is an apocalyptic number.

312013332120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312013332120 is an abundant number, since it is smaller than the sum of its proper divisors (786659205480).

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

312013332120 is a wasteful number, since it uses less digits than its factorization.

312013332120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10039097 (or 10039093 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 312013332120 its reverse (21233310213), we get a palindrome (333246642333).

The spelling of 312013332120 in words is "three hundred twelve billion, thirteen million, three hundred thirty-two thousand, one hundred twenty".