23201132240 has 160 divisors (see below), whose sum is σ = 66129267456. Its totient is φ = 7449108480.

The previous prime is 23201132239. The next prime is 23201132299. The reversal of 23201132240 is 4223110232.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219032 + ... + 307208.

Almost surely, 2^23201132240 is an apocalyptic number.

23201132240 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 23201132240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33064633728).

23201132240 is an abundant number, since it is smaller than the sum of its proper divisors (42928135216).

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

23201132240 is a wasteful number, since it uses less digits than its factorization.

23201132240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88237 (or 88231 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23201132240 its reverse (4223110232), we get a palindrome (27424242472).

The spelling of 23201132240 in words is "twenty-three billion, two hundred one million, one hundred thirty-two thousand, two hundred forty".