1313113331 has 2 divisors, whose sum is σ = 1313113332. Its totient is φ = 1313113330.

The previous prime is 1313113327. The next prime is 1313113339. The reversal of 1313113331 is 1333113131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313113331 - 2² = 1313113327 is a prime.

It is a super-2 number, since 2×1313113331² = 3448533240099831122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1313113339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656556665 + 656556666.

It is an arithmetic number, because the mean of its divisors is an integer number (656556666).

Almost surely, 2^1313113331 is an apocalyptic number.

1313113331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313113331 is an equidigital number, since it uses as much as digits as its factorization.

1313113331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243, while the sum is 20.

The square root of 1313113331 is about 36236.9056487995. The cubic root of 1313113331 is about 1095.0503041185.

Adding to 1313113331 its reverse (1333113131), we get a palindrome (2646226462).

It can be divided in two parts, 13131 and 13331, that added together give a palindrome (26462).

The spelling of 1313113331 in words is "one billion, three hundred thirteen million, one hundred thirteen thousand, three hundred thirty-one".