23130221231 has 4 divisors (see below), whose sum is σ = 24909469032. Its totient is φ = 21350973432.

The previous prime is 23130221221. The next prime is 23130221237. The reversal of 23130221231 is 13212203132.

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

It is a cyclic number.

It is not a de Polignac number, because 23130221231 - 2²⁶ = 23063112367 is a prime.

It is a super-2 number, since 2×23130221231² (a number of 22 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 (23130221237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889623881 + ... + 889623906.

It is an arithmetic number, because the mean of its divisors is an integer number (6227367258).

Almost surely, 2^23130221231 is an apocalyptic number.

23130221231 is a deficient number, since it is larger than the sum of its proper divisors (1779247801).

23130221231 is a wasteful number, since it uses less digits than its factorization.

23130221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779247800.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23130221231 its reverse (13212203132), we get a palindrome (36342424363).

The spelling of 23130221231 in words is "twenty-three billion, one hundred thirty million, two hundred twenty-one thousand, two hundred thirty-one".