23321232440 has 64 divisors (see below), whose sum is σ = 57259008000. Its totient is φ = 8478080640.

The previous prime is 23321232437. The next prime is 23321232461. The reversal of 23321232440 is 4423212332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2670401 + ... + 2679119.

It is an arithmetic number, because the mean of its divisors is an integer number (894672000).

Almost surely, 2^23321232440 is an apocalyptic number.

23321232440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23321232440 is an abundant number, since it is smaller than the sum of its proper divisors (33937775560).

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

23321232440 is a wasteful number, since it uses less digits than its factorization.

23321232440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14820 (or 14816 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 23321232440 its reverse (4423212332), we get a palindrome (27744444772).

The spelling of 23321232440 in words is "twenty-three billion, three hundred twenty-one million, two hundred thirty-two thousand, four hundred forty".