23134013621 has 2 divisors, whose sum is σ = 23134013622. Its totient is φ = 23134013620.

The previous prime is 23134013587. The next prime is 23134013633. The reversal of 23134013621 is 12631043132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17838540721 + 5295472900 = 133561^2 + 72770^2 .

It is a cyclic number.

It is not a de Polignac number, because 23134013621 - 2¹⁰ = 23134012597 is a prime.

It is a super-2 number, since 2×23134013621² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23134012621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11567006810 + 11567006811.

It is an arithmetic number, because the mean of its divisors is an integer number (11567006811).

Almost surely, 2^23134013621 is an apocalyptic number.

It is an amenable number.

23134013621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23134013621 is an equidigital number, since it uses as much as digits as its factorization.

23134013621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 23134013621 its reverse (12631043132), we get a palindrome (35765056753).

The spelling of 23134013621 in words is "twenty-three billion, one hundred thirty-four million, thirteen thousand, six hundred twenty-one".