609307213 has 2 divisors, whose sum is σ = 609307214. Its totient is φ = 609307212.

The previous prime is 609307189. The next prime is 609307241. The reversal of 609307213 is 312703906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 445927689 + 163379524 = 21117^2 + 12782^2 .

It is a cyclic number.

It is not a de Polignac number, because 609307213 - 2⁹ = 609306701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609307243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304653606 + 304653607.

It is an arithmetic number, because the mean of its divisors is an integer number (304653607).

Almost surely, 2^609307213 is an apocalyptic number.

It is an amenable number.

609307213 is a deficient number, since it is larger than the sum of its proper divisors (1).

609307213 is an equidigital number, since it uses as much as digits as its factorization.

609307213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 609307213 is about 24684.1490232092. The cubic root of 609307213 is about 847.7714229998.

The spelling of 609307213 in words is "six hundred nine million, three hundred seven thousand, two hundred thirteen".