13231123555 has 8 divisors (see below), whose sum is σ = 17098682832. Its totient is φ = 9770675808.

The previous prime is 13231123483. The next prime is 13231123597. The reversal of 13231123555 is 55532113231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231123555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101777809 + ... + 101777938.

It is an arithmetic number, because the mean of its divisors is an integer number (2137335354).

Almost surely, 2^13231123555 is an apocalyptic number.

13231123555 is a deficient number, since it is larger than the sum of its proper divisors (3867559277).

13231123555 is a wasteful number, since it uses less digits than its factorization.

13231123555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203555765.

The product of its digits is 13500, while the sum is 31.

Adding to 13231123555 its reverse (55532113231), we get a palindrome (68763236786).

The spelling of 13231123555 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty-three thousand, five hundred fifty-five".