23321313240 has 128 divisors (see below), whose sum is σ = 70468392960. Its totient is φ = 6174342144.

The previous prime is 23321313187. The next prime is 23321313247. The reversal of 23321313240 is 4231312332.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 23321313240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23321313247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12228367 + ... + 12230273.

It is an arithmetic number, because the mean of its divisors is an integer number (550534320).

Almost surely, 2^23321313240 is an apocalyptic number.

23321313240 is a gapful number since it is divisible by the number (20) 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 23321313240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35234196480).

23321313240 is an abundant number, since it is smaller than the sum of its proper divisors (47147079720).

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

23321313240 is a wasteful number, since it uses less digits than its factorization.

23321313240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601 (or 2597 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 23321313240 its reverse (4231312332), we get a palindrome (27552625572).

The spelling of 23321313240 in words is "twenty-three billion, three hundred twenty-one million, three hundred thirteen thousand, two hundred forty".