23531332 has 48 divisors (see below), whose sum is σ = 48105792. Its totient is φ = 9953280.

The previous prime is 23531309. The next prime is 23531341. The reversal of 23531332 is 23313532.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121828 + ... + 122020.

It is an arithmetic number, because the mean of its divisors is an integer number (1002204).

Almost surely, 2^23531332 is an apocalyptic number.

23531332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23531332 is an abundant number, since it is smaller than the sum of its proper divisors (24574460).

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

23531332 is a wasteful number, since it uses less digits than its factorization.

23531332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 386 counting only the distinct ones).

The product of its digits is 1620, while the sum is 22.

The square root of 23531332 is about 4850.9104300121. The cubic root of 23531332 is about 286.5599572786.

Adding to 23531332 its reverse (23313532), we get a palindrome (46844864).

The spelling of 23531332 in words is "twenty-three million, five hundred thirty-one thousand, three hundred thirty-two".