200031220309 has 2 divisors, whose sum is σ = 200031220310. Its totient is φ = 200031220308.

The previous prime is 200031220303. The next prime is 200031220321. The reversal of 200031220309 is 903022130002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199366715025 + 664505284 = 446505^2 + 25778^2 .

It is a cyclic number.

It is not a de Polignac number, because 200031220309 - 2²¹ = 200029123157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200031220309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200031220303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100015610154 + 100015610155.

It is an arithmetic number, because the mean of its divisors is an integer number (100015610155).

Almost surely, 2^200031220309 is an apocalyptic number.

It is an amenable number.

200031220309 is a deficient number, since it is larger than the sum of its proper divisors (1).

200031220309 is an equidigital number, since it uses as much as digits as its factorization.

200031220309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The spelling of 200031220309 in words is "two hundred billion, thirty-one million, two hundred twenty thousand, three hundred nine".