23144320323405 has 32 divisors (see below), whose sum is σ = 41360879646720. Its totient is φ = 12279011117760.

The previous prime is 23144320323401. The next prime is 23144320323407. The reversal of 23144320323405 is 50432302344132.

23144320323405 is a `hidden beast` number, since 2 + 3 + 1 + 4 + 4 + 320 + 323 + 4 + 0 + 5 = 666.

It is not a de Polignac number, because 23144320323405 - 2² = 23144320323401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23144320323405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144320323401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 448768482 + ... + 448820051.

It is an arithmetic number, because the mean of its divisors is an integer number (1292527488960).

Almost surely, 2^{23144320323405} is an apocalyptic number.

It is an amenable number.

23144320323405 is a deficient number, since it is larger than the sum of its proper divisors (18216559323315).

23144320323405 is a wasteful number, since it uses less digits than its factorization.

23144320323405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897588738 (or 897588732 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 36.

Adding to 23144320323405 its reverse (50432302344132), we get a palindrome (73576622667537).

The spelling of 23144320323405 in words is "twenty-three trillion, one hundred forty-four billion, three hundred twenty million, three hundred twenty-three thousand, four hundred five".