23115132 has 42 divisors (see below), whose sum is σ = 60657128. Its totient is φ = 7704072.

The previous prime is 23115109. The next prime is 23115133. The reversal of 23115132 is 23151132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23115133) 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 13 ways as a sum of consecutive naturals, for example, 1048 + ... + 6879.

Almost surely, 2^23115132 is an apocalyptic number.

It is an amenable number.

23115132 is an abundant number, since it is smaller than the sum of its proper divisors (37541996).

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

23115132 is an equidigital number, since it uses as much as digits as its factorization.

23115132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7949 (or 7932 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 23115132 is about 4807.8198801536. The cubic root of 23115132 is about 284.8604302763.

Adding to 23115132 its reverse (23151132), we get a palindrome (46266264).

The spelling of 23115132 in words is "twenty-three million, one hundred fifteen thousand, one hundred thirty-two".