312717265 has 12 divisors (see below), whose sum is σ = 436528116. Its totient is φ = 214434528.

The previous prime is 312717241. The next prime is 312717277. The reversal of 312717265 is 562717213.

It can be written as a sum of positive squares in 2 ways, for example, as 56205009 + 256512256 = 7497^2 + 16016^2 .

It is not a de Polignac number, because 312717265 - 2¹³ = 312709073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312717265.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 637954 + ... + 638443.

It is an arithmetic number, because the mean of its divisors is an integer number (36377343).

Almost surely, 2^312717265 is an apocalyptic number.

312717265 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

312717265 is a deficient number, since it is larger than the sum of its proper divisors (123810851).

312717265 is a wasteful number, since it uses less digits than its factorization.

312717265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276416 (or 1276409 counting only the distinct ones).

The product of its digits is 17640, while the sum is 34.

The square root of 312717265 is about 17683.8136441210. The cubic root of 312717265 is about 678.7616338347.

The spelling of 312717265 in words is "three hundred twelve million, seven hundred seventeen thousand, two hundred sixty-five".