23243232140421 has 4 divisors (see below), whose sum is σ = 30990976187232. Its totient is φ = 15495488093612.

The previous prime is 23243232140413. The next prime is 23243232140503. The reversal of 23243232140421 is 12404123234232.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23243232140421 - 2³ = 23243232140413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23243232150421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3873872023401 + ... + 3873872023406.

It is an arithmetic number, because the mean of its divisors is an integer number (7747744046808).

Almost surely, 2^{23243232140421} is an apocalyptic number.

It is an amenable number.

23243232140421 is a deficient number, since it is larger than the sum of its proper divisors (7747744046811).

23243232140421 is an equidigital number, since it uses as much as digits as its factorization.

23243232140421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7747744046810.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 23243232140421 its reverse (12404123234232), we get a palindrome (35647355374653).

The spelling of 23243232140421 in words is "twenty-three trillion, two hundred forty-three billion, two hundred thirty-two million, one hundred forty thousand, four hundred twenty-one".