312421672 has 16 divisors (see below), whose sum is σ = 586222560. Its totient is φ = 156095664.

The previous prime is 312421663. The next prime is 312421717. The reversal of 312421672 is 276124213.

It is a super-2 number, since 2×312421672² = 195214602270551168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312421672.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2268 + ... + 25099.

It is an arithmetic number, because the mean of its divisors is an integer number (36638910).

Almost surely, 2^312421672 is an apocalyptic number.

It is an amenable number.

312421672 is a deficient number, since it is larger than the sum of its proper divisors (273800888).

312421672 is a wasteful number, since it uses less digits than its factorization.

312421672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28800 (or 28796 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 312421672 is about 17675.4539404226. The cubic root of 312421672 is about 678.5477021035.

Adding to 312421672 its reverse (276124213), we get a palindrome (588545885).

The spelling of 312421672 in words is "three hundred twelve million, four hundred twenty-one thousand, six hundred seventy-two".