1313520111 has 16 divisors (see below), whose sum is σ = 1947102720. Its totient is φ = 875163960.

The previous prime is 1313520073. The next prime is 1313520149. The reversal of 1313520111 is 1110253131.

1313520111 is a `hidden beast` number, since 1 + 31 + 3 + 520 + 111 = 666.

It is an interprime number because it is at equal distance from previous prime (1313520073) and next prime (1313520149).

It is not a de Polignac number, because 1313520111 - 2⁷ = 1313519983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313520151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35466 + ... + 62328.

It is an arithmetic number, because the mean of its divisors is an integer number (121693920).

Almost surely, 2^1313520111 is an apocalyptic number.

1313520111 is a deficient number, since it is larger than the sum of its proper divisors (633582609).

1313520111 is a wasteful number, since it uses less digits than its factorization.

1313520111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28683 (or 28677 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1313520111 is about 36242.5180002714. The cubic root of 1313520111 is about 1095.1633683817.

Adding to 1313520111 its reverse (1110253131), we get a palindrome (2423773242).

The spelling of 1313520111 in words is "one billion, three hundred thirteen million, five hundred twenty thousand, one hundred eleven".