1313111508 has 36 divisors (see below), whose sum is σ = 3233684160. Its totient is φ = 414665424.

The previous prime is 1313111507. The next prime is 1313111519. The reversal of 1313111508 is 8051113131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313111507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147228 + ... + 155891.

It is an arithmetic number, because the mean of its divisors is an integer number (89824560).

Almost surely, 2^1313111508 is an apocalyptic number.

It is an amenable number.

1313111508 is an abundant number, since it is smaller than the sum of its proper divisors (1920572652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1313111508 is a wasteful number, since it uses less digits than its factorization.

1313111508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303164 (or 303143 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1313111508 is about 36236.8804948770. The cubic root of 1313111508 is about 1095.0497973642.

Adding to 1313111508 its reverse (8051113131), we get a palindrome (9364224639).

The spelling of 1313111508 in words is "one billion, three hundred thirteen million, one hundred eleven thousand, five hundred eight".