1313020331 has 8 divisors (see below), whose sum is σ = 1502234880. Its totient is φ = 1124215848.

The previous prime is 1313020321. The next prime is 1313020363. The reversal of 1313020331 is 1330203131.

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

It is not a de Polignac number, because 1313020331 - 2²⁶ = 1245911467 is a prime.

It is a super-2 number, since 2×1313020331² = 3448044779238699122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313020321) 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, 95621 + ... + 108486.

It is an arithmetic number, because the mean of its divisors is an integer number (187779360).

Almost surely, 2^1313020331 is an apocalyptic number.

1313020331 is a deficient number, since it is larger than the sum of its proper divisors (189214549).

1313020331 is an equidigital number, since it uses as much as digits as its factorization.

1313020331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205033.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1313020331 is about 36235.6224039273. The cubic root of 1313020331 is about 1095.0244515435.

Adding to 1313020331 its reverse (1330203131), we get a palindrome (2643223462).

The spelling of 1313020331 in words is "one billion, three hundred thirteen million, twenty thousand, three hundred thirty-one".