23123240444413 has 4 divisors (see below), whose sum is σ = 23124153025120. Its totient is φ = 23122327863708.

The previous prime is 23123240444407. The next prime is 23123240444483. The reversal of 23123240444413 is 31444404232132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23123240444413 is a prime.

It is a super-2 number, since 2×23123240444413² (a number of 28 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 (23123240444483) 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, 456252345 + ... + 456303022.

It is an arithmetic number, because the mean of its divisors is an integer number (5781038256280).

Almost surely, 2^{23123240444413} is an apocalyptic number.

It is an amenable number.

23123240444413 is a deficient number, since it is larger than the sum of its proper divisors (912580707).

23123240444413 is an equidigital number, since it uses as much as digits as its factorization.

23123240444413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912580706.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 23123240444413 its reverse (31444404232132), we get a palindrome (54567644676545).

The spelling of 23123240444413 in words is "twenty-three trillion, one hundred twenty-three billion, two hundred forty million, four hundred forty-four thousand, four hundred thirteen".