23311152 has 50 divisors (see below), whose sum is σ = 67472988. Its totient is φ = 7769952.

The previous prime is 23311139. The next prime is 23311159. The reversal of 23311152 is 25111332.

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

It is not an unprimeable number, because it can be changed into a prime (23311159) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7698 + ... + 10289.

Almost surely, 2^23311152 is an apocalyptic number.

It is an amenable number.

23311152 is an abundant number, since it is smaller than the sum of its proper divisors (44161836).

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

23311152 is a wasteful number, since it uses less digits than its factorization.

23311152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18007 (or 17992 counting only the distinct ones).

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

The square root of 23311152 is about 4828.1623833504. The cubic root of 23311152 is about 285.6633854088.

Adding to 23311152 its product of digits (180), we get a palindrome (23311332).

Adding to 23311152 its reverse (25111332), we get a palindrome (48422484).

The spelling of 23311152 in words is "twenty-three million, three hundred eleven thousand, one hundred fifty-two".