313120256215 has 16 divisors (see below), whose sum is σ = 425944965600. Its totient is φ = 219057409152.

The previous prime is 313120256159. The next prime is 313120256269. The reversal of 313120256215 is 512652021313.

It is a cyclic number.

It is not a de Polignac number, because 313120256215 - 2⁷ = 313120256087 is a prime.

It is a super-2 number, since 2×313120256215² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126768100 + ... + 126770569.

It is an arithmetic number, because the mean of its divisors is an integer number (26621560350).

Almost surely, 2^313120256215 is an apocalyptic number.

313120256215 is a deficient number, since it is larger than the sum of its proper divisors (112824709385).

313120256215 is a wasteful number, since it uses less digits than its factorization.

313120256215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253538706.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 313120256215 its reverse (512652021313), we get a palindrome (825772277528).

The spelling of 313120256215 in words is "three hundred thirteen billion, one hundred twenty million, two hundred fifty-six thousand, two hundred fifteen".