23120435532 has 96 divisors (see below), whose sum is σ = 58417004800. Its totient is φ = 7092271872.

The previous prime is 23120435519. The next prime is 23120435543. The reversal of 23120435532 is 23553402132.

It is a self number, because there is not a number n which added to its sum of digits gives 23120435532.

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, 6181719 + ... + 6185457.

Almost surely, 2^23120435532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23120435532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29208502400).

23120435532 is an abundant number, since it is smaller than the sum of its proper divisors (35296569268).

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

23120435532 is a wasteful number, since it uses less digits than its factorization.

23120435532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535 (or 4533 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 23120435532 its reverse (23553402132), we get a palindrome (46673837664).

The spelling of 23120435532 in words is "twenty-three billion, one hundred twenty million, four hundred thirty-five thousand, five hundred thirty-two".