1313312235 has 16 divisors (see below), whose sum is σ = 2150168064. Its totient is φ = 684143712.

The previous prime is 1313312227. The next prime is 1313312251. The reversal of 1313312235 is 5322133131.

It is not a de Polignac number, because 1313312235 - 2³ = 1313312227 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017427 + ... + 1018716.

It is an arithmetic number, because the mean of its divisors is an integer number (134385504).

Almost surely, 2^1313312235 is an apocalyptic number.

1313312235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1313312235 is a deficient number, since it is larger than the sum of its proper divisors (836855829).

1313312235 is a wasteful number, since it uses less digits than its factorization.

1313312235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036194.

The product of its digits is 1620, while the sum is 24.

The square root of 1313312235 is about 36239.6500397010. The cubic root of 1313312235 is about 1095.1055922859.

Adding to 1313312235 its reverse (5322133131), we get a palindrome (6635445366).

The spelling of 1313312235 in words is "one billion, three hundred thirteen million, three hundred twelve thousand, two hundred thirty-five".