21232401402323 has 4 divisors (see below), whose sum is σ = 21232410729000. Its totient is φ = 21232392075648.

The previous prime is 21232401402301. The next prime is 21232401402349. The reversal of 21232401402323 is 32320410423212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21232401402323 - 2⁸ = 21232401402067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232401402383) 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, 1255928 + ... + 6636426.

It is an arithmetic number, because the mean of its divisors is an integer number (5308102682250).

Almost surely, 2^{21232401402323} is an apocalyptic number.

21232401402323 is a deficient number, since it is larger than the sum of its proper divisors (9326677).

21232401402323 is an equidigital number, since it uses as much as digits as its factorization.

21232401402323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9326676.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21232401402323 its reverse (32320410423212), we get a palindrome (53552811825535).

The spelling of 21232401402323 in words is "twenty-one trillion, two hundred thirty-two billion, four hundred one million, four hundred two thousand, three hundred twenty-three".