23431334432 has 144 divisors (see below), whose sum is σ = 54117614880. Its totient is φ = 9949547520.

The previous prime is 23431334371. The next prime is 23431334449. The reversal of 23431334432 is 23443313432.

It is a super-3 number, since 3×23431334432³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5368283 + ... + 5372645.

It is an arithmetic number, because the mean of its divisors is an integer number (375816770).

Almost surely, 2^23431334432 is an apocalyptic number.

23431334432 is a gapful number since it is divisible by the number (22) 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 23431334432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27058807440).

23431334432 is an abundant number, since it is smaller than the sum of its proper divisors (30686280448).

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

23431334432 is a wasteful number, since it uses less digits than its factorization.

23431334432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487 (or 4468 counting only the distinct ones).

The product of its digits is 62208, while the sum is 32.

Adding to 23431334432 its reverse (23443313432), we get a palindrome (46874647864).

The spelling of 23431334432 in words is "twenty-three billion, four hundred thirty-one million, three hundred thirty-four thousand, four hundred thirty-two".