1313023331 has 16 divisors (see below), whose sum is σ = 1347940608. Its totient is φ = 1278720000.

The previous prime is 1313023301. The next prime is 1313023337. The reversal of 1313023331 is 1333203131.

It is a cyclic number.

It is not a de Polignac number, because 1313023331 - 2⁶ = 1313023267 is a prime.

It is a super-2 number, since 2×1313023331² = 3448060535500671122, which contains 22 as substring.

It is a Duffinian number.

1313023331 is a modest number, since divided by 23331 gives 1313 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1313023337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2184431 + ... + 2185031.

It is an arithmetic number, because the mean of its divisors is an integer number (84246288).

Almost surely, 2^1313023331 is an apocalyptic number.

1313023331 is a deficient number, since it is larger than the sum of its proper divisors (34917277).

1313023331 is a wasteful number, since it uses less digits than its factorization.

1313023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1313023331 is about 36235.6637996325. The cubic root of 1313023331 is about 1095.0252855166.

Adding to 1313023331 its reverse (1333203131), we get a palindrome (2646226462).

The spelling of 1313023331 in words is "one billion, three hundred thirteen million, twenty-three thousand, three hundred thirty-one".