13040244431 has 8 divisors (see below), whose sum is σ = 13257756000. Its totient is φ = 12824466400.

The previous prime is 13040244419. The next prime is 13040244449. The reversal of 13040244431 is 13444204031.

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-13040244431 is a prime.

It is a super-2 number, since 2×13040244431² (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 13040244431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13040244461) 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, 418211 + ... + 448308.

It is an arithmetic number, because the mean of its divisors is an integer number (1657219500).

Almost surely, 2^13040244431 is an apocalyptic number.

13040244431 is a deficient number, since it is larger than the sum of its proper divisors (217511569).

13040244431 is a wasteful number, since it uses less digits than its factorization.

13040244431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866769.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 13040244431 its reverse (13444204031), we get a palindrome (26484448462).

The spelling of 13040244431 in words is "thirteen billion, forty million, two hundred forty-four thousand, four hundred thirty-one".