23401312 has 48 divisors (see below), whose sum is σ = 52920000. Its totient is φ = 10074240.

The previous prime is 23401307. The next prime is 23401349. The reversal of 23401312 is 21310432.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4939 + ... + 8437.

It is an arithmetic number, because the mean of its divisors is an integer number (1102500).

Almost surely, 2^23401312 is an apocalyptic number.

23401312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23401312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26460000).

23401312 is an abundant number, since it is smaller than the sum of its proper divisors (29518688).

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

23401312 is a wasteful number, since it uses less digits than its factorization.

23401312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539 (or 3531 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23401312 is about 4837.4902583881. The cubic root of 23401312 is about 286.0311961667.

Adding to 23401312 its reverse (21310432), we get a palindrome (44711744).

The spelling of 23401312 in words is "twenty-three million, four hundred one thousand, three hundred twelve".