13444304131 has 4 divisors (see below), whose sum is σ = 13462797712. Its totient is φ = 13425810552.

The previous prime is 13444304129. The next prime is 13444304141. The reversal of 13444304131 is 13140344431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13140344431 = 53 ⋅247931027.

It is a cyclic number.

It is not a de Polignac number, because 13444304131 - 2¹ = 13444304129 is a prime.

It is a super-2 number, since 2×13444304131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13444304131.

It is not an unprimeable number, because it can be changed into a prime (13444304141) 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, 9245700 + ... + 9247153.

It is an arithmetic number, because the mean of its divisors is an integer number (3365699428).

Almost surely, 2^13444304131 is an apocalyptic number.

13444304131 is a deficient number, since it is larger than the sum of its proper divisors (18493581).

13444304131 is an equidigital number, since it uses as much as digits as its factorization.

13444304131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18493580.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 13444304131 its reverse (13140344431), we get a palindrome (26584648562).

The spelling of 13444304131 in words is "thirteen billion, four hundred forty-four million, three hundred four thousand, one hundred thirty-one".