23231312 has 40 divisors (see below), whose sum is σ = 49226016. Its totient is φ = 10555776.

The previous prime is 23231267. The next prime is 23231317. The reversal of 23231312 is 21313232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231317) 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, 13103 + ... + 14769.

Almost surely, 2^23231312 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 23231312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24613008).

23231312 is an abundant number, since it is smaller than the sum of its proper divisors (25994704).

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

23231312 is a wasteful number, since it uses less digits than its factorization.

23231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755 (or 1749 counting only the distinct ones).

The product of its digits is 216, while the sum is 17.

The square root of 23231312 is about 4819.8871356081. The cubic root of 23231312 is about 285.3368828471.

Adding to 23231312 its reverse (21313232), we get a palindrome (44544544).

The spelling of 23231312 in words is "twenty-three million, two hundred thirty-one thousand, three hundred twelve".