23311100344421 has 4 divisors (see below), whose sum is σ = 23311127528844. Its totient is φ = 23311073160000.

The previous prime is 23311100344403. The next prime is 23311100344429. The reversal of 23311100344421 is 12444300111332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5958993621025 + 17352106723396 = 2441105^2 + 4165586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23311100344421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311100344429) 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, 12262580 + ... + 14035421.

It is an arithmetic number, because the mean of its divisors is an integer number (5827781882211).

Almost surely, 2^{23311100344421} is an apocalyptic number.

It is an amenable number.

23311100344421 is a deficient number, since it is larger than the sum of its proper divisors (27184423).

23311100344421 is an equidigital number, since it uses as much as digits as its factorization.

23311100344421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27184422.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 23311100344421 its reverse (12444300111332), we get a palindrome (35755400455753).

The spelling of 23311100344421 in words is "twenty-three trillion, three hundred eleven billion, one hundred million, three hundred forty-four thousand, four hundred twenty-one".