313123133131 has 4 divisors (see below), whose sum is σ = 314052282232. Its totient is φ = 312193984032.

The previous prime is 313123133117. The next prime is 313123133153. The reversal of 313123133131 is 131331321313.

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 313123133131 - 2²⁷ = 312988915403 is a prime.

It is a super-2 number, since 2×313123133131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313123133096 and 313123133105.

It is not an unprimeable number, because it can be changed into a prime (313123133101) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 464574045 + ... + 464574718.

It is an arithmetic number, because the mean of its divisors is an integer number (78513070558).

Almost surely, 2^313123133131 is an apocalyptic number.

313123133131 is a deficient number, since it is larger than the sum of its proper divisors (929149101).

313123133131 is an equidigital number, since it uses as much as digits as its factorization.

313123133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929149100.

The product of its digits is 1458, while the sum is 25.

Adding to 313123133131 its reverse (131331321313), we get a palindrome (444454454444).

The spelling of 313123133131 in words is "three hundred thirteen billion, one hundred twenty-three million, one hundred thirty-three thousand, one hundred thirty-one".