312647377 has 4 divisors (see below), whose sum is σ = 357311296. Its totient is φ = 267983460.

The previous prime is 312647339. The next prime is 312647399. The reversal of 312647377 is 773746213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312647377 - 2¹¹ = 312645329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312641377) 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, 22331949 + ... + 22331962.

It is an arithmetic number, because the mean of its divisors is an integer number (89327824).

Almost surely, 2^312647377 is an apocalyptic number.

It is an amenable number.

312647377 is a deficient number, since it is larger than the sum of its proper divisors (44663919).

312647377 is an equidigital number, since it uses as much as digits as its factorization.

312647377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44663918.

The product of its digits is 148176, while the sum is 40.

The square root of 312647377 is about 17681.8374893561. The cubic root of 312647377 is about 678.7110654431.

The spelling of 312647377 in words is "three hundred twelve million, six hundred forty-seven thousand, three hundred seventy-seven".