100723321 has 2 divisors, whose sum is σ = 100723322. Its totient is φ = 100723320.

The previous prime is 100723307. The next prime is 100723331. The reversal of 100723321 is 123327001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100721296 + 2025 = 10036^2 + 45^2 .

It is a cyclic number.

It is not a de Polignac number, because 100723321 - 2⁵ = 100723289 is a prime.

It is not a weakly prime, because it can be changed into another prime (100723331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50361660 + 50361661.

It is an arithmetic number, because the mean of its divisors is an integer number (50361661).

Almost surely, 2^100723321 is an apocalyptic number.

It is an amenable number.

100723321 is a deficient number, since it is larger than the sum of its proper divisors (1).

100723321 is an equidigital number, since it uses as much as digits as its factorization.

100723321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 100723321 is about 10036.1008863004. The cubic root of 100723321 is about 465.2753154355.

The spelling of 100723321 in words is "one hundred million, seven hundred twenty-three thousand, three hundred twenty-one".