23421312 has 112 divisors (see below), whose sum is σ = 70236180. Its totient is φ = 7776000.

The previous prime is 23421311. The next prime is 23421313. The reversal of 23421312 is 21312432.

It is an interprime number because it is at equal distance from previous prime (23421311) and next prime (23421313).

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 and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421311) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 93187 + ... + 93437.

Almost surely, 2^23421312 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 23421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35118090).

23421312 is an abundant number, since it is smaller than the sum of its proper divisors (46814868).

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

23421312 is an frugal number, since it uses more digits than its factorization.

23421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 256 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 23421312 is about 4839.5570045201. The cubic root of 23421312 is about 286.1126587642.

Adding to 23421312 its reverse (21312432), we get a palindrome (44733744).

The spelling of 23421312 in words is "twenty-three million, four hundred twenty-one thousand, three hundred twelve".