313321111231 has 4 divisors (see below), whose sum is σ = 318631638600. Its totient is φ = 308010583864.

The previous prime is 313321111193. The next prime is 313321111249. The reversal of 313321111231 is 132111123313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132111123313 = 13 ⋅10162394101.

It is a cyclic number.

It is not a de Polignac number, because 313321111231 - 2²⁹ = 312784240319 is a prime.

It is a super-2 number, since 2×313321111231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313321411231) 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, 2655263596 + ... + 2655263713.

It is an arithmetic number, because the mean of its divisors is an integer number (79657909650).

Almost surely, 2^313321111231 is an apocalyptic number.

313321111231 is a deficient number, since it is larger than the sum of its proper divisors (5310527369).

313321111231 is an equidigital number, since it uses as much as digits as its factorization.

313321111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5310527368.

The product of its digits is 324, while the sum is 22.

Adding to 313321111231 its reverse (132111123313), we get a palindrome (445432234544).

The spelling of 313321111231 in words is "three hundred thirteen billion, three hundred twenty-one million, one hundred eleven thousand, two hundred thirty-one".