23143022431 has 4 divisors (see below), whose sum is σ = 23143626864. Its totient is φ = 23142418000.

The previous prime is 23143022411. The next prime is 23143022467. The reversal of 23143022431 is 13422034132.

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 23143022431 - 2⁹ = 23143021919 is a prime.

It is a super-2 number, since 2×23143022431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23143022396 and 23143022405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23143022411) 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, 240595 + ... + 322756.

It is an arithmetic number, because the mean of its divisors is an integer number (5785906716).

Almost surely, 2^23143022431 is an apocalyptic number.

23143022431 is a deficient number, since it is larger than the sum of its proper divisors (604433).

23143022431 is an equidigital number, since it uses as much as digits as its factorization.

23143022431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604432.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 23143022431 its reverse (13422034132), we get a palindrome (36565056563).

The spelling of 23143022431 in words is "twenty-three billion, one hundred forty-three million, twenty-two thousand, four hundred thirty-one".