312099870 has 32 divisors (see below), whose sum is σ = 754077600. Its totient is φ = 82666880.

The previous prime is 312099817. The next prime is 312099919. The reversal of 312099870 is 78990213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30441 + ... + 39380.

It is an arithmetic number, because the mean of its divisors is an integer number (23564925).

Almost surely, 2^312099870 is an apocalyptic number.

312099870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312099870 is an abundant number, since it is smaller than the sum of its proper divisors (441977730).

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

312099870 is a wasteful number, since it uses less digits than its factorization.

312099870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69980.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 312099870 is about 17666.3485191479. The cubic root of 312099870 is about 678.3146484653.

The spelling of 312099870 in words is "three hundred twelve million, ninety-nine thousand, eight hundred seventy".