23423230040 has 128 divisors (see below), whose sum is σ = 62327232000. Its totient is φ = 7755568128.

The previous prime is 23423230031. The next prime is 23423230063. The reversal of 23423230040 is 4003232432.

It is a junction number, because it is equal to n+sod(n) for n = 23423229988 and 23423230015.

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, 1060631 + ... + 1082489.

It is an arithmetic number, because the mean of its divisors is an integer number (486931500).

Almost surely, 2^23423230040 is an apocalyptic number.

23423230040 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 23423230040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31163616000).

23423230040 is an abundant number, since it is smaller than the sum of its proper divisors (38904001960).

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

23423230040 is a wasteful number, since it uses less digits than its factorization.

23423230040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22009 (or 22005 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 23423230040 its reverse (4003232432), we get a palindrome (27426462472).

The spelling of 23423230040 in words is "twenty-three billion, four hundred twenty-three million, two hundred thirty thousand, forty".