23102120440 has 64 divisors (see below), whose sum is σ = 59428108800. Its totient is φ = 7917706368.

The previous prime is 23102120413. The next prime is 23102120441. The reversal of 23102120440 is 4402120132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23102120441) 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, 794071 + ... + 822649.

It is an arithmetic number, because the mean of its divisors is an integer number (928564200).

Almost surely, 2^23102120440 is an apocalyptic number.

23102120440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23102120440 is an abundant number, since it is smaller than the sum of its proper divisors (36325988360).

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

23102120440 is a wasteful number, since it uses less digits than its factorization.

23102120440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31484 (or 31480 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 23102120440 its reverse (4402120132), we get a palindrome (27504240572).

The spelling of 23102120440 in words is "twenty-three billion, one hundred two million, one hundred twenty thousand, four hundred forty".