1313311320331 has 8 divisors (see below), whose sum is σ = 1362700436864. Its totient is φ = 1264361218560.

The previous prime is 1313311320319. The next prime is 1313311320371. The reversal of 1313311320331 is 1330231133131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1313311320331 - 2⁹ = 1313311319819 is a prime.

It is a super-2 number, since 2×1313311320331² (a number of 25 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 = 1313311320296 and 1313311320305.

It is not an unprimeable number, because it can be changed into a prime (1313311320371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109747596 + ... + 109759561.

It is an arithmetic number, because the mean of its divisors is an integer number (170337554608).

Almost surely, 2^{1313311320331} is an apocalyptic number.

1313311320331 is a deficient number, since it is larger than the sum of its proper divisors (49389116533).

1313311320331 is a wasteful number, since it uses less digits than its factorization.

1313311320331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219507381.

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

Adding to 1313311320331 its reverse (1330231133131), we get a palindrome (2643542453462).

The spelling of 1313311320331 in words is "one trillion, three hundred thirteen billion, three hundred eleven million, three hundred twenty thousand, three hundred thirty-one".