1311100313 has 4 divisors (see below), whose sum is σ = 1311283728. Its totient is φ = 1310916900.

The previous prime is 1311100309. The next prime is 1311100327. The reversal of 1311100313 is 3130011131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1311100313 - 2² = 1311100309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311100013) 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, 80531 + ... + 95432.

It is an arithmetic number, because the mean of its divisors is an integer number (327820932).

Almost surely, 2^1311100313 is an apocalyptic number.

It is an amenable number.

1311100313 is a deficient number, since it is larger than the sum of its proper divisors (183415).

1311100313 is an equidigital number, since it uses as much as digits as its factorization.

1311100313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183414.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1311100313 is about 36209.1191966886. The cubic root of 1311100313 is about 1094.4904429814.

Adding to 1311100313 its reverse (3130011131), we get a palindrome (4441111444).

The spelling of 1311100313 in words is "one billion, three hundred eleven million, one hundred thousand, three hundred thirteen".