312425217 has 12 divisors (see below), whose sum is σ = 485994964. Its totient is φ = 192261600.

The previous prime is 312425213. The next prime is 312425231. The reversal of 312425217 is 712524213.

It can be written as a sum of positive squares in 2 ways, for example, as 38489616 + 273935601 = 6204^2 + 16551^2 .

It is not a de Polignac number, because 312425217 - 2² = 312425213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312425213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1335034 + ... + 1335267.

Almost surely, 2^312425217 is an apocalyptic number.

It is an amenable number.

312425217 is a deficient number, since it is larger than the sum of its proper divisors (173569747).

312425217 is a wasteful number, since it uses less digits than its factorization.

312425217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670320 (or 2670317 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 312425217 is about 17675.5542204481. The cubic root of 312425217 is about 678.5502685521.

The spelling of 312425217 in words is "three hundred twelve million, four hundred twenty-five thousand, two hundred seventeen".