2321132421523 has 4 divisors (see below), whose sum is σ = 2321139612960. Its totient is φ = 2321125230088.

The previous prime is 2321132421511. The next prime is 2321132421533. The reversal of 2321132421523 is 3251242311232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2321132421523 - 2²¹ = 2321130324371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321132421533) 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 3 ways as a sum of consecutive naturals, for example, 3087643 + ... + 3765076.

It is an arithmetic number, because the mean of its divisors is an integer number (580284903240).

Almost surely, 2^{2321132421523} is an apocalyptic number.

2321132421523 is a deficient number, since it is larger than the sum of its proper divisors (7191437).

2321132421523 is an equidigital number, since it uses as much as digits as its factorization.

2321132421523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7191436.

The product of its digits is 17280, while the sum is 31.

Adding to 2321132421523 its reverse (3251242311232), we get a palindrome (5572374732755).

The spelling of 2321132421523 in words is "two trillion, three hundred twenty-one billion, one hundred thirty-two million, four hundred twenty-one thousand, five hundred twenty-three".