23243434231 has 12 divisors (see below), whose sum is σ = 25081779520. Its totient is φ = 21515646240.

The previous prime is 23243434219. The next prime is 23243434237. The reversal of 23243434231 is 13243434232.

It is a happy number.

It is not a de Polignac number, because 23243434231 - 2³¹ = 21095950583 is a prime.

It is a super-2 number, since 2×23243434231² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23243434193 and 23243434202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23243434237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 692286 + ... + 725083.

Almost surely, 2^23243434231 is an apocalyptic number.

23243434231 is a deficient number, since it is larger than the sum of its proper divisors (1838345289).

23243434231 is a wasteful number, since it uses less digits than its factorization.

23243434231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417446 (or 1417423 counting only the distinct ones).

The product of its digits is 41472, while the sum is 31.

Adding to 23243434231 its reverse (13243434232), we get a palindrome (36486868463).

Subtracting from 23243434231 its reverse (13243434232), we obtain a palindrome (9999999999).

The spelling of 23243434231 in words is "twenty-three billion, two hundred forty-three million, four hundred thirty-four thousand, two hundred thirty-one".