100244321 has 4 divisors (see below), whose sum is σ = 100464132. Its totient is φ = 100024512.

The previous prime is 100244311. The next prime is 100244423. The reversal of 100244321 is 123442001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75603025 + 24641296 = 8695^2 + 4964^2 .

It is a cyclic number.

It is not a de Polignac number, because 100244321 - 2²⁶ = 33135457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100244321.

It is not an unprimeable number, because it can be changed into a prime (100244311) 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, 109220 + ... + 110133.

It is an arithmetic number, because the mean of its divisors is an integer number (25116033).

Almost surely, 2^100244321 is an apocalyptic number.

It is an amenable number.

100244321 is a deficient number, since it is larger than the sum of its proper divisors (219811).

100244321 is an equidigital number, since it uses as much as digits as its factorization.

100244321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219810.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 100244321 is about 10012.2085975073. The cubic root of 100244321 is about 464.5365884656.

Adding to 100244321 its reverse (123442001), we get a palindrome (223686322).

The spelling of 100244321 in words is "one hundred million, two hundred forty-four thousand, three hundred twenty-one".