13511323213 has 8 divisors (see below), whose sum is σ = 13978563480. Its totient is φ = 13044171840.

The previous prime is 13511323201. The next prime is 13511323237. The reversal of 13511323213 is 31232311531.

It can be written as a sum of positive squares in 4 ways, for example, as 6197310729 + 7314012484 = 78723^2 + 85522^2 .

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 13511323213 - 2⁵ = 13511323181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13511323253) 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, 478731 + ... + 506167.

It is an arithmetic number, because the mean of its divisors is an integer number (1747320435).

Almost surely, 2^13511323213 is an apocalyptic number.

It is an amenable number.

13511323213 is a deficient number, since it is larger than the sum of its proper divisors (467240267).

13511323213 is a wasteful number, since it uses less digits than its factorization.

13511323213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44447.

The product of its digits is 1620, while the sum is 25.

Adding to 13511323213 its reverse (31232311531), we get a palindrome (44743634744).

The spelling of 13511323213 in words is "thirteen billion, five hundred eleven million, three hundred twenty-three thousand, two hundred thirteen".