11513503213 has 8 divisors (see below), whose sum is σ = 11724393600. Its totient is φ = 11304241728.

The previous prime is 11513503193. The next prime is 11513503219. The reversal of 11513503213 is 31230531511.

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

It is a cyclic number.

It is not a de Polignac number, because 11513503213 - 2⁹ = 11513502701 is a prime.

It is a super-2 number, since 2×11513503213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11513503219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392956 + ... + 421237.

It is an arithmetic number, because the mean of its divisors is an integer number (1465549200).

Almost surely, 2^11513503213 is an apocalyptic number.

It is an amenable number.

11513503213 is a deficient number, since it is larger than the sum of its proper divisors (210890387).

11513503213 is an equidigital number, since it uses as much as digits as its factorization.

11513503213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814451.

The product of its (nonzero) digits is 1350, while the sum is 25.

The spelling of 11513503213 in words is "eleven billion, five hundred thirteen million, five hundred three thousand, two hundred thirteen".