213204300109 has 2 divisors, whose sum is σ = 213204300110. Its totient is φ = 213204300108.

The previous prime is 213204300059. The next prime is 213204300137. The reversal of 213204300109 is 901003402312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184558737609 + 28645562500 = 429603^2 + 169250^2 .

It is a cyclic number.

It is not a de Polignac number, because 213204300109 - 2⁷ = 213204299981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213204300509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106602150054 + 106602150055.

It is an arithmetic number, because the mean of its divisors is an integer number (106602150055).

Almost surely, 2^213204300109 is an apocalyptic number.

It is an amenable number.

213204300109 is a deficient number, since it is larger than the sum of its proper divisors (1).

213204300109 is an equidigital number, since it uses as much as digits as its factorization.

213204300109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 213204300109 in words is "two hundred thirteen billion, two hundred four million, three hundred thousand, one hundred nine".