23312040032 has 96 divisors (see below), whose sum is σ = 48525039360. Its totient is φ = 11011714560.

The previous prime is 23312040029. The next prime is 23312040067. The reversal of 23312040032 is 23004021332.

It is a super-2 number, since 2×23312040032² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23312039986 and 23312040013.

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, 5630219 + ... + 5634357.

It is an arithmetic number, because the mean of its divisors is an integer number (505469160).

Almost surely, 2^23312040032 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 23312040032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24262519680).

23312040032 is an abundant number, since it is smaller than the sum of its proper divisors (25212999328).

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

23312040032 is a wasteful number, since it uses less digits than its factorization.

23312040032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324 (or 4316 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 23312040032 its reverse (23004021332), we get a palindrome (46316061364).

The spelling of 23312040032 in words is "twenty-three billion, three hundred twelve million, forty thousand, thirty-two".