23111234431 has 8 divisors (see below), whose sum is σ = 23570015040. Its totient is φ = 22653295392.

The previous prime is 23111234429. The next prime is 23111234441. The reversal of 23111234431 is 13443211132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23111234431 - 2¹ = 23111234429 is a prime.

It is a super-2 number, since 2×23111234431² (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 = 23111234396 and 23111234405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23111234411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154780 + ... + 264913.

It is an arithmetic number, because the mean of its divisors is an integer number (2946251880).

Almost surely, 2^23111234431 is an apocalyptic number.

23111234431 is a deficient number, since it is larger than the sum of its proper divisors (458780609).

23111234431 is a wasteful number, since it uses less digits than its factorization.

23111234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420785.

The product of its digits is 1728, while the sum is 25.

Adding to 23111234431 its reverse (13443211132), we get a palindrome (36554445563).

The spelling of 23111234431 in words is "twenty-three billion, one hundred eleven million, two hundred thirty-four thousand, four hundred thirty-one".