13144202231 has 4 divisors (see below), whose sum is σ = 13144898592. Its totient is φ = 13143505872.

The previous prime is 13144202191. The next prime is 13144202257. The reversal of 13144202231 is 13220244131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13144202231 is a prime.

It is a super-2 number, since 2×13144202231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13144202197 and 13144202206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144702231) 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, 319055 + ... + 357888.

It is an arithmetic number, because the mean of its divisors is an integer number (3286224648).

Almost surely, 2^13144202231 is an apocalyptic number.

13144202231 is a deficient number, since it is larger than the sum of its proper divisors (696361).

13144202231 is an equidigital number, since it uses as much as digits as its factorization.

13144202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696360.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 13144202231 its reverse (13220244131), we get a palindrome (26364446362).

The spelling of 13144202231 in words is "thirteen billion, one hundred forty-four million, two hundred two thousand, two hundred thirty-one".