100904213 has 2 divisors, whose sum is σ = 100904214. Its totient is φ = 100904212.

The previous prime is 100904207. The next prime is 100904227. The reversal of 100904213 is 312409001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98763844 + 2140369 = 9938^2 + 1463^2 .

It is a cyclic number.

It is not a de Polignac number, because 100904213 - 2⁶ = 100904149 is a prime.

It is a super-2 number, since 2×100904213² = 20363320402298738, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100904263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50452106 + 50452107.

It is an arithmetic number, because the mean of its divisors is an integer number (50452107).

Almost surely, 2^100904213 is an apocalyptic number.

It is an amenable number.

100904213 is a deficient number, since it is larger than the sum of its proper divisors (1).

100904213 is an equidigital number, since it uses as much as digits as its factorization.

100904213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 100904213 is about 10045.1089093150. The cubic root of 100904213 is about 465.5536827728.

The spelling of 100904213 in words is "one hundred million, nine hundred four thousand, two hundred thirteen".