1311520814 has 8 divisors (see below), whose sum is σ = 1967451528. Its totient is φ = 655703640.

The previous prime is 1311520799. The next prime is 1311520817. The reversal of 1311520814 is 4180251131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311520817) 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, 11969 + ... + 52595.

It is an arithmetic number, because the mean of its divisors is an integer number (245931441).

Almost surely, 2^1311520814 is an apocalyptic number.

1311520814 is a deficient number, since it is larger than the sum of its proper divisors (655930714).

1311520814 is a wasteful number, since it uses less digits than its factorization.

1311520814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56770.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1311520814 is about 36214.9252933097. The cubic root of 1311520814 is about 1094.6074401650.

Adding to 1311520814 its reverse (4180251131), we get a palindrome (5491771945).

The spelling of 1311520814 in words is "one billion, three hundred eleven million, five hundred twenty thousand, eight hundred fourteen".