23040040304020 has 24 divisors (see below), whose sum is σ = 48708810045000. Its totient is φ = 9154163663232.

The previous prime is 23040040303961. The next prime is 23040040304027. The reversal of 23040040304020 is 2040304004032.

It can be written as a sum of positive squares in 4 ways, for example, as 187949995024 + 22852090308996 = 433532^2 + 4780386^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23040040303982 and 23040040304000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040040304027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3865775595 + ... + 3865781554.

It is an arithmetic number, because the mean of its divisors is an integer number (2029533751875).

Almost surely, 2^{23040040304020} is an apocalyptic number.

23040040304020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23040040304020 is an abundant number, since it is smaller than the sum of its proper divisors (25668769740980).

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

23040040304020 is a wasteful number, since it uses less digits than its factorization.

23040040304020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7731557307 (or 7731557305 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 23040040304020 its reverse (2040304004032), we get a palindrome (25080344308052).

The spelling of 23040040304020 in words is "twenty-three trillion, forty billion, forty million, three hundred four thousand, twenty".