312501317 has 4 divisors (see below), whose sum is σ = 316902816. Its totient is φ = 308099820.

The previous prime is 312501307. The next prime is 312501331. The reversal of 312501317 is 713105213.

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 312501317 - 2¹² = 312497221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312501292 and 312501301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312501307) 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, 2200643 + ... + 2200784.

It is an arithmetic number, because the mean of its divisors is an integer number (79225704).

Almost surely, 2^312501317 is an apocalyptic number.

It is an amenable number.

312501317 is a deficient number, since it is larger than the sum of its proper divisors (4401499).

312501317 is an equidigital number, since it uses as much as digits as its factorization.

312501317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4401498.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 312501317 is about 17677.7067800097. The cubic root of 312501317 is about 678.6053574509.

The spelling of 312501317 in words is "three hundred twelve million, five hundred one thousand, three hundred seventeen".