313321111331 has 4 divisors (see below), whose sum is σ = 313323496152. Its totient is φ = 313318726512.

The previous prime is 313321111309. The next prime is 313321111361. The reversal of 313321111331 is 133111123313.

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 313321111331 - 2¹⁸ = 313320849187 is a prime.

It is a super-2 number, since 2×313321111331² (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 = 313321111297 and 313321111306.

It is not an unprimeable number, because it can be changed into a prime (313321111361) 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, 983090 + ... + 1262183.

It is an arithmetic number, because the mean of its divisors is an integer number (78330874038).

Almost surely, 2^313321111331 is an apocalyptic number.

313321111331 is a deficient number, since it is larger than the sum of its proper divisors (2384821).

313321111331 is a wasteful number, since it uses less digits than its factorization.

313321111331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384820.

The product of its digits is 486, while the sum is 23.

Adding to 313321111331 its reverse (133111123313), we get a palindrome (446432234644).

The spelling of 313321111331 in words is "three hundred thirteen billion, three hundred twenty-one million, one hundred eleven thousand, three hundred thirty-one".