23400304421 has 12 divisors (see below), whose sum is σ = 26099281572. Its totient is φ = 20855433984.

The previous prime is 23400304393. The next prime is 23400304469. The reversal of 23400304421 is 12440300432.

It can be written as a sum of positive squares in 6 ways, for example, as 510127396 + 22890177025 = 22586^2 + 151295^2 .

It is not a de Polignac number, because 23400304421 - 2⁶ = 23400304357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23400304471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1059236 + ... + 1081101.

It is an arithmetic number, because the mean of its divisors is an integer number (2174940131).

Almost surely, 2^23400304421 is an apocalyptic number.

It is an amenable number.

23400304421 is a deficient number, since it is larger than the sum of its proper divisors (2698977151).

23400304421 is a wasteful number, since it uses less digits than its factorization.

23400304421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140408 (or 2140379 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 23400304421 its reverse (12440300432), we get a palindrome (35840604853).

The spelling of 23400304421 in words is "twenty-three billion, four hundred million, three hundred four thousand, four hundred twenty-one".