312315517 has 8 divisors (see below), whose sum is σ = 337723776. Its totient is φ = 287689152.

The previous prime is 312315503. The next prime is 312315527. The reversal of 312315517 is 715513213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312315517 - 2¹⁵ = 312282749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312315527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194643 + ... + 196240.

It is an arithmetic number, because the mean of its divisors is an integer number (42215472).

Almost surely, 2^312315517 is an apocalyptic number.

It is an amenable number.

312315517 is a deficient number, since it is larger than the sum of its proper divisors (25408259).

312315517 is a wasteful number, since it uses less digits than its factorization.

312315517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390947.

The product of its digits is 3150, while the sum is 28.

The square root of 312315517 is about 17672.4507921227. The cubic root of 312315517 is about 678.4708408211.

The spelling of 312315517 in words is "three hundred twelve million, three hundred fifteen thousand, five hundred seventeen".