23331312 has 120 divisors (see below), whose sum is σ = 69831840. Its totient is φ = 7257600.

The previous prime is 23331281. The next prime is 23331353. The reversal of 23331312 is 21313332.

23331312 is a `hidden beast` number, since 23 + 331 + 312 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154437 + ... + 154587.

It is an arithmetic number, because the mean of its divisors is an integer number (581932).

Almost surely, 2^23331312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23331312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34915920).

23331312 is an abundant number, since it is smaller than the sum of its proper divisors (46500528).

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

23331312 is a wasteful number, since it uses less digits than its factorization.

23331312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 222 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 23331312 is about 4830.2496829874. The cubic root of 23331312 is about 285.7457110196.

Adding to 23331312 its reverse (21313332), we get a palindrome (44644644).

The spelling of 23331312 in words is "twenty-three million, three hundred thirty-one thousand, three hundred twelve".