23430140240 has 80 divisors (see below), whose sum is σ = 59087884800. Its totient is φ = 8588837376.

The previous prime is 23430140233. The next prime is 23430140297. The reversal of 23430140240 is 4204103432.

It is a tau number, because it is divible by the number of its divisors (80).

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, 63521 + ... + 225599.

It is an arithmetic number, because the mean of its divisors is an integer number (738598560).

Almost surely, 2^23430140240 is an apocalyptic number.

23430140240 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 23430140240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29543942400).

23430140240 is an abundant number, since it is smaller than the sum of its proper divisors (35657744560).

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

23430140240 is a wasteful number, since it uses less digits than its factorization.

23430140240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162244 (or 162238 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 23430140240 its reverse (4204103432), we get a palindrome (27634243672).

The spelling of 23430140240 in words is "twenty-three billion, four hundred thirty million, one hundred forty thousand, two hundred forty".