312480138 has 16 divisors (see below), whose sum is σ = 625602816. Its totient is φ = 104052960.

The previous prime is 312480109. The next prime is 312480173. The reversal of 312480138 is 831084213.

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, 20331 + ... + 32222.

It is an arithmetic number, because the mean of its divisors is an integer number (39100176).

Almost surely, 2^312480138 is an apocalyptic number.

312480138 is an abundant number, since it is smaller than the sum of its proper divisors (313122678).

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

312480138 is a wasteful number, since it uses less digits than its factorization.

312480138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53549.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 312480138 is about 17677.1077385414. The cubic root of 312480138 is about 678.5900268407.

The spelling of 312480138 in words is "three hundred twelve million, four hundred eighty thousand, one hundred thirty-eight".