22461231 has 16 divisors (see below), whose sum is σ = 32387040. Its totient is φ = 13764480.

The previous prime is 22461227. The next prime is 22461239. The reversal of 22461231 is 13216422.

It is not a de Polignac number, because 22461231 - 2² = 22461227 is a prime.

It is a super-2 number, since 2×22461231² = 1009013796070722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22461198 and 22461207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22461239) 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, 9421 + ... + 11561.

It is an arithmetic number, because the mean of its divisors is an integer number (2024190).

Almost surely, 2^22461231 is an apocalyptic number.

22461231 is a deficient number, since it is larger than the sum of its proper divisors (9925809).

22461231 is a wasteful number, since it uses less digits than its factorization.

22461231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426.

The product of its digits is 576, while the sum is 21.

The square root of 22461231 is about 4739.3281169381. The cubic root of 22461231 is about 282.1485686638.

Adding to 22461231 its reverse (13216422), we get a palindrome (35677653).

The spelling of 22461231 in words is "twenty-two million, four hundred sixty-one thousand, two hundred thirty-one".