312834615990 has 64 divisors (see below), whose sum is σ = 808903452672. Its totient is φ = 76972464000.

The previous prime is 312834615923. The next prime is 312834616009. The reversal of 312834615990 is 99516438213.

It is a super-2 number, since 2×312834615990² (a number of 24 digits) contains 22 as substring.

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, 746295 + ... + 1087485.

It is an arithmetic number, because the mean of its divisors is an integer number (12639116448).

Almost surely, 2^312834615990 is an apocalyptic number.

312834615990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312834615990 is an abundant number, since it is smaller than the sum of its proper divisors (496068836682).

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

312834615990 is a wasteful number, since it uses less digits than its factorization.

312834615990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343565.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 312834615990 in words is "three hundred twelve billion, eight hundred thirty-four million, six hundred fifteen thousand, nine hundred ninety".