313516161243515 has 4 divisors (see below), whose sum is σ = 376219393492224. Its totient is φ = 250812928994808.

The previous prime is 313516161243511. The next prime is 313516161243529. The reversal of 313516161243515 is 515342161615313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 313516161243515 - 2² = 313516161243511 is a prime.

It is a super-2 number, since 2×313516161243515² (a number of 30 digits) 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 313516161243515.

It is not an unprimeable number, because it can be changed into a prime (313516161243511) 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, 31351616124347 + ... + 31351616124356.

It is an arithmetic number, because the mean of its divisors is an integer number (94054848373056).

Almost surely, 2^{313516161243515} is an apocalyptic number.

313516161243515 is a deficient number, since it is larger than the sum of its proper divisors (62703232248709).

313516161243515 is an equidigital number, since it uses as much as digits as its factorization.

313516161243515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62703232248708.

The product of its digits is 972000, while the sum is 47.

The spelling of 313516161243515 in words is "three hundred thirteen trillion, five hundred sixteen billion, one hundred sixty-one million, two hundred forty-three thousand, five hundred fifteen".