23331404440 has 64 divisors (see below), whose sum is σ = 54087564960. Its totient is φ = 9053752320.

The previous prime is 23331404431. The next prime is 23331404441. The reversal of 23331404440 is 4440413332.

It is a junction number, because it is equal to n+sod(n) for n = 23331404399 and 23331404408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23331404441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112627 + ... + 243613.

Almost surely, 2^23331404440 is an apocalyptic number.

23331404440 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 23331404440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27043782480).

23331404440 is an abundant number, since it is smaller than the sum of its proper divisors (30756160520).

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

23331404440 is a wasteful number, since it uses less digits than its factorization.

23331404440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131132 (or 131128 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 23331404440 its reverse (4440413332), we get a palindrome (27771817772).

The spelling of 23331404440 in words is "twenty-three billion, three hundred thirty-one million, four hundred four thousand, four hundred forty".