100243232321 has 4 divisors (see below), whose sum is σ = 101450982192. Its totient is φ = 99035482452.

The previous prime is 100243232311. The next prime is 100243232329. The reversal of 100243232321 is 123232342001.

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 100243232321 - 2²⁶ = 100176123457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100243232329) 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, 603874811 + ... + 603874976.

It is an arithmetic number, because the mean of its divisors is an integer number (25362745548).

Almost surely, 2^100243232321 is an apocalyptic number.

It is an amenable number.

100243232321 is a deficient number, since it is larger than the sum of its proper divisors (1207749871).

100243232321 is an equidigital number, since it uses as much as digits as its factorization.

100243232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207749870.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 100243232321 its reverse (123232342001), we get a palindrome (223475574322).

The spelling of 100243232321 in words is "one hundred billion, two hundred forty-three million, two hundred thirty-two thousand, three hundred twenty-one".