13023043681 has 8 divisors (see below), whose sum is σ = 13889757960. Its totient is φ = 12167513088.

The previous prime is 13023043643. The next prime is 13023043697. The reversal of 13023043681 is 18634032031.

It can be written as a sum of positive squares in 4 ways, for example, as 4171997281 + 8851046400 = 64591^2 + 94080^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-13023043681 is a prime.

It is a super-2 number, since 2×13023043681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13023043181) 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, 2793516 + ... + 2798173.

It is an arithmetic number, because the mean of its divisors is an integer number (1736219745).

Almost surely, 2^13023043681 is an apocalyptic number.

It is an amenable number.

13023043681 is a deficient number, since it is larger than the sum of its proper divisors (866714279).

13023043681 is a wasteful number, since it uses less digits than its factorization.

13023043681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591843.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 13023043681 in words is "thirteen billion, twenty-three million, forty-three thousand, six hundred eighty-one".