23223431 has 16 divisors (see below), whose sum is σ = 29230080. Its totient is φ = 17923680.

The previous prime is 23223401. The next prime is 23223439. The reversal of 23223431 is 13432232.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23223431 is a prime.

It is a super-2 number, since 2×23223431² = 1078655494823522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23223439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7010 + ... + 9776.

It is an arithmetic number, because the mean of its divisors is an integer number (1826880).

Almost surely, 2^23223431 is an apocalyptic number.

23223431 is a deficient number, since it is larger than the sum of its proper divisors (6006649).

23223431 is a wasteful number, since it uses less digits than its factorization.

23223431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894.

The product of its digits is 864, while the sum is 20.

The square root of 23223431 is about 4819.0695159958. The cubic root of 23223431 is about 285.3046132633.

Adding to 23223431 its reverse (13432232), we get a palindrome (36655663).

The spelling of 23223431 in words is "twenty-three million, two hundred twenty-three thousand, four hundred thirty-one".