22573231 has 4 divisors (see below), whose sum is σ = 22587712. Its totient is φ = 22558752.

The previous prime is 22573181. The next prime is 22573241. The reversal of 22573231 is 13237522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13237522 = 2 ⋅6618761.

It is a cyclic number.

It is not a de Polignac number, because 22573231 - 2²³ = 14184623 is a prime.

It is a super-2 number, since 2×22573231² = 1019101515558722, 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 = 22573196 and 22573205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22573241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4575 + ... + 8128.

It is an arithmetic number, because the mean of its divisors is an integer number (5646928).

Almost surely, 2^22573231 is an apocalyptic number.

22573231 is a deficient number, since it is larger than the sum of its proper divisors (14481).

22573231 is a wasteful number, since it uses less digits than its factorization.

22573231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14480.

The product of its digits is 2520, while the sum is 25.

The square root of 22573231 is about 4751.1294446689. The cubic root of 22573231 is about 282.6167570214.

The spelling of 22573231 in words is "twenty-two million, five hundred seventy-three thousand, two hundred thirty-one".