23421400231 has 4 divisors (see below), whose sum is σ = 23447224072. Its totient is φ = 23395576392.

The previous prime is 23421400217. The next prime is 23421400307. The reversal of 23421400231 is 13200412432.

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 23421400231 - 2⁵ = 23421400199 is a prime.

It is a super-2 number, since 2×23421400231² (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 (23421490231) 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, 12910560 + ... + 12912373.

It is an arithmetic number, because the mean of its divisors is an integer number (5861806018).

Almost surely, 2^23421400231 is an apocalyptic number.

23421400231 is a deficient number, since it is larger than the sum of its proper divisors (25823841).

23421400231 is an equidigital number, since it uses as much as digits as its factorization.

23421400231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25823840.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 23421400231 its reverse (13200412432), we get a palindrome (36621812663).

The spelling of 23421400231 in words is "twenty-three billion, four hundred twenty-one million, four hundred thousand, two hundred thirty-one".