23312033440 has 96 divisors (see below), whose sum is σ = 55796202000. Its totient is φ = 9203048448.

The previous prime is 23312033401. The next prime is 23312033441. The reversal of 23312033440 is 4433021332.

It can be written as a sum of positive squares in 8 ways, for example, as 5874302736 + 17437730704 = 76644^2 + 132052^2 .

It is not an unprimeable number, because it can be changed into a prime (23312033441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10095006 + ... + 10097314.

Almost surely, 2^23312033440 is an apocalyptic number.

23312033440 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 23312033440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27898101000).

23312033440 is an abundant number, since it is smaller than the sum of its proper divisors (32484168560).

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

23312033440 is a wasteful number, since it uses less digits than its factorization.

23312033440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122 (or 3114 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 23312033440 its reverse (4433021332), we get a palindrome (27745054772).

The spelling of 23312033440 in words is "twenty-three billion, three hundred twelve million, thirty-three thousand, four hundred forty".