23131230002121 has 4 divisors (see below), whose sum is σ = 30841640002832. Its totient is φ = 15420820001412.

The previous prime is 23131230002087. The next prime is 23131230002123. The reversal of 23131230002121 is 12120003213132.

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 not a de Polignac number, because 23131230002121 - 2²⁶ = 23131162893257 is a prime.

It is a super-2 number, since 2×23131230002121² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23131230002123) 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, 3855205000351 + ... + 3855205000356.

It is an arithmetic number, because the mean of its divisors is an integer number (7710410000708).

Almost surely, 2^{23131230002121} is an apocalyptic number.

It is an amenable number.

23131230002121 is a deficient number, since it is larger than the sum of its proper divisors (7710410000711).

23131230002121 is an equidigital number, since it uses as much as digits as its factorization.

23131230002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7710410000710.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 23131230002121 its reverse (12120003213132), we get a palindrome (35251233215253).

The spelling of 23131230002121 in words is "twenty-three trillion, one hundred thirty-one billion, two hundred thirty million, two thousand, one hundred twenty-one".