312491946 has 16 divisors (see below), whose sum is σ = 673059744. Its totient is φ = 96151344.

The previous prime is 312491941. The next prime is 312491947. The reversal of 312491946 is 649194213.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (312491941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2003076 + ... + 2003231.

It is an arithmetic number, because the mean of its divisors is an integer number (42066234).

Almost surely, 2^312491946 is an apocalyptic number.

312491946 is an abundant number, since it is smaller than the sum of its proper divisors (360567798).

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

312491946 is a wasteful number, since it uses less digits than its factorization.

312491946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006325.

The product of its digits is 46656, while the sum is 39.

The square root of 312491946 is about 17677.4417266753. The cubic root of 312491946 is about 678.5985742534.

The spelling of 312491946 in words is "three hundred twelve million, four hundred ninety-one thousand, nine hundred forty-six".