22731023 has 16 divisors (see below), whose sum is σ = 27926784. Its totient is φ = 18057600.

The previous prime is 22731019. The next prime is 22731043. The reversal of 22731023 is 32013722.

It is a cyclic number.

It is not a de Polignac number, because 22731023 - 2² = 22731019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22730986 and 22731004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22731013) 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, 6548 + ... + 9398.

It is an arithmetic number, because the mean of its divisors is an integer number (1745424).

Almost surely, 2^22731023 is an apocalyptic number.

22731023 is a deficient number, since it is larger than the sum of its proper divisors (5195761).

22731023 is a wasteful number, since it uses less digits than its factorization.

22731023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 22731023 is about 4767.7062619251. The cubic root of 22731023 is about 283.2737469467.

Adding to 22731023 its reverse (32013722), we get a palindrome (54744745).

The spelling of 22731023 in words is "twenty-two million, seven hundred thirty-one thousand, twenty-three".