313103255531 has 6 divisors (see below), whose sum is σ = 344154818196. Its totient is φ = 284639323100.

The previous prime is 313103255489. The next prime is 313103255557. The reversal of 313103255531 is 135552301313.

It is not a de Polignac number, because 313103255531 - 2⁶ = 313103255467 is a prime.

It is a super-2 number, since 2×313103255531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313103255561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1293814985 + ... + 1293815226.

It is an arithmetic number, because the mean of its divisors is an integer number (57359136366).

Almost surely, 2^313103255531 is an apocalyptic number.

313103255531 is a deficient number, since it is larger than the sum of its proper divisors (31051562665).

313103255531 is a wasteful number, since it uses less digits than its factorization.

313103255531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587630233 (or 2587630222 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 32.

Adding to 313103255531 its reverse (135552301313), we get a palindrome (448655556844).

The spelling of 313103255531 in words is "three hundred thirteen billion, one hundred three million, two hundred fifty-five thousand, five hundred thirty-one".