312674891 has 4 divisors (see below), whose sum is σ = 315770784. Its totient is φ = 309579000.

The previous prime is 312674881. The next prime is 312674899. The reversal of 312674891 is 198476213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198476213 = 13 ⋅15267401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312674891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312674899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547795 + ... + 1547996.

It is an arithmetic number, because the mean of its divisors is an integer number (78942696).

Almost surely, 2^312674891 is an apocalyptic number.

312674891 is a deficient number, since it is larger than the sum of its proper divisors (3095893).

312674891 is a wasteful number, since it uses less digits than its factorization.

312674891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3095892.

The product of its digits is 72576, while the sum is 41.

The square root of 312674891 is about 17682.6155022383. The cubic root of 312674891 is about 678.7309744630.

The spelling of 312674891 in words is "three hundred twelve million, six hundred seventy-four thousand, eight hundred ninety-one".