23281132 has 24 divisors (see below), whose sum is σ = 46936064. Its totient is φ = 9897552.

The previous prime is 23281123. The next prime is 23281133. The reversal of 23281132 is 23118232.

It is a super-2 number, since 2×23281132² = 1084022214402848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23281133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283 + ... + 6829.

Almost surely, 2^23281132 is an apocalyptic number.

It is an amenable number.

23281132 is an abundant number, since it is smaller than the sum of its proper divisors (23654932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23281132 is a wasteful number, since it uses less digits than its factorization.

23281132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685 (or 6683 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 23281132 is about 4825.0525385741. The cubic root of 23281132 is about 285.5407073778.

Adding to 23281132 its reverse (23118232), we get a palindrome (46399364).

The spelling of 23281132 in words is "twenty-three million, two hundred eighty-one thousand, one hundred thirty-two".