11323870513 has 4 divisors (see below), whose sum is σ = 11359592820. Its totient is φ = 11288148208.

The previous prime is 11323870499. The next prime is 11323870517. The reversal of 11323870513 is 31507832311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 576816289 + 10747054224 = 24017^2 + 103668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11323870513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11323870517) 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, 17860678 + ... + 17861311.

It is an arithmetic number, because the mean of its divisors is an integer number (2839898205).

Almost surely, 2^11323870513 is an apocalyptic number.

It is an amenable number.

11323870513 is a deficient number, since it is larger than the sum of its proper divisors (35722307).

11323870513 is an equidigital number, since it uses as much as digits as its factorization.

11323870513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35722306.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 11323870513 in words is "eleven billion, three hundred twenty-three million, eight hundred seventy thousand, five hundred thirteen".