23201440421 has 8 divisors (see below), whose sum is σ = 24912235584. Its totient is φ = 21529090240.

The previous prime is 23201440351. The next prime is 23201440499. The reversal of 23201440421 is 12404410232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23201440421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23201440321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9609995 + ... + 9612408.

It is an arithmetic number, because the mean of its divisors is an integer number (3114029448).

Almost surely, 2^23201440421 is an apocalyptic number.

It is an amenable number.

23201440421 is a deficient number, since it is larger than the sum of its proper divisors (1710795163).

23201440421 is a wasteful number, since it uses less digits than its factorization.

23201440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19222491.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 23201440421 its reverse (12404410232), we get a palindrome (35605850653).

The spelling of 23201440421 in words is "twenty-three billion, two hundred one million, four hundred forty thousand, four hundred twenty-one".