312747907 has 6 divisors (see below), whose sum is σ = 313905092. Its totient is φ = 311594952.

The previous prime is 312747899. The next prime is 312747913. The reversal of 312747907 is 709747213.

It is not a de Polignac number, because 312747907 - 2³ = 312747899 is a prime.

It is a super-2 number, since 2×312747907² = 195622506665761298, which contains 22 as substring.

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 312747907.

It is not an unprimeable number, because it can be changed into a prime (312747947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84028 + ... + 87670.

Almost surely, 2^312747907 is an apocalyptic number.

312747907 is a deficient number, since it is larger than the sum of its proper divisors (1157185).

312747907 is an frugal number, since it uses more digits than its factorization.

312747907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229 (or 3936 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 312747907 is about 17684.6800084141. The cubic root of 312747907 is about 678.7838028854.

The spelling of 312747907 in words is "three hundred twelve million, seven hundred forty-seven thousand, nine hundred seven".