313121111355 has 96 divisors (see below), whose sum is σ = 587438220096. Its totient is φ = 153376975872.

The previous prime is 313121111311. The next prime is 313121111399. The reversal of 313121111355 is 553111121313.

313121111355 is a `hidden beast` number, since 313 + 1 + 211 + 1 + 135 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (313121111311) and next prime (313121111399).

It is not a de Polignac number, because 313121111355 - 2⁸ = 313121111099 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 150321144 + ... + 150323226.

It is an arithmetic number, because the mean of its divisors is an integer number (6119148126).

Almost surely, 2^313121111355 is an apocalyptic number.

313121111355 is a deficient number, since it is larger than the sum of its proper divisors (274317108741).

313121111355 is a wasteful number, since it uses less digits than its factorization.

313121111355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277 (or 3274 counting only the distinct ones).

The product of its digits is 1350, while the sum is 27.

Adding to 313121111355 its reverse (553111121313), we get a palindrome (866232232668).

The spelling of 313121111355 in words is "three hundred thirteen billion, one hundred twenty-one million, one hundred eleven thousand, three hundred fifty-five".