23354431 has 4 divisors (see below), whose sum is σ = 23376600. Its totient is φ = 23332264.

The previous prime is 23354423. The next prime is 23354459. The reversal of 23354431 is 13445332.

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 23354431 - 2³ = 23354423 is a prime.

It is a super-2 number, since 2×23354431² = 1090858894667522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23354396 and 23354405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23351431) 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, 9421 + ... + 11638.

It is an arithmetic number, because the mean of its divisors is an integer number (5844150).

Almost surely, 2^23354431 is an apocalyptic number.

23354431 is a deficient number, since it is larger than the sum of its proper divisors (22169).

23354431 is a wasteful number, since it uses less digits than its factorization.

23354431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22168.

The product of its digits is 4320, while the sum is 25.

The square root of 23354431 is about 4832.6422379481. The cubic root of 23354431 is about 285.8400616828.

Adding to 23354431 its reverse (13445332), we get a palindrome (36799763).

Subtracting from 23354431 its reverse (13445332), we obtain a palindrome (9909099).

The spelling of 23354431 in words is "twenty-three million, three hundred fifty-four thousand, four hundred thirty-one".