1313318911 has 4 divisors (see below), whose sum is σ = 1358605800. Its totient is φ = 1268032024.

The previous prime is 1313318899. The next prime is 1313318921. The reversal of 1313318911 is 1198133131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1198133131 = 13 ⋅92164087.

It is a cyclic number.

It is not a de Polignac number, because 1313318911 - 2¹¹ = 1313316863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313318921) 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, 22643401 + ... + 22643458.

It is an arithmetic number, because the mean of its divisors is an integer number (339651450).

Almost surely, 2^1313318911 is an apocalyptic number.

1313318911 is a deficient number, since it is larger than the sum of its proper divisors (45286889).

1313318911 is an equidigital number, since it uses as much as digits as its factorization.

1313318911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45286888.

The product of its digits is 1944, while the sum is 31.

The square root of 1313318911 is about 36239.7421486412. The cubic root of 1313318911 is about 1095.1074478773.

The spelling of 1313318911 in words is "one billion, three hundred thirteen million, three hundred eighteen thousand, nine hundred eleven".