20344403440231 has 8 divisors (see below), whose sum is σ = 22036001238720. Its totient is φ = 18670897597152.

The previous prime is 20344403440187. The next prime is 20344403440279. The reversal of 20344403440231 is 13204430444302.

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

It is a cyclic number.

It is not a de Polignac number, because 20344403440231 - 2²⁵ = 20344369885799 is a prime.

It is a super-2 number, since 2×20344403440231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344403470231) 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, 4522986511 + ... + 4522991008.

It is an arithmetic number, because the mean of its divisors is an integer number (2754500154840).

Almost surely, 2^{20344403440231} is an apocalyptic number.

20344403440231 is a deficient number, since it is larger than the sum of its proper divisors (1691597798489).

20344403440231 is a wasteful number, since it uses less digits than its factorization.

20344403440231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045977705.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 20344403440231 its reverse (13204430444302), we get a palindrome (33548833884533).

The spelling of 20344403440231 in words is "twenty trillion, three hundred forty-four billion, four hundred three million, four hundred forty thousand, two hundred thirty-one".