306147269 has 2 divisors, whose sum is σ = 306147270. Its totient is φ = 306147268.

The previous prime is 306147263. The next prime is 306147277. The reversal of 306147269 is 962741603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179292100 + 126855169 = 13390^2 + 11263^2 .

It is a cyclic number.

It is not a de Polignac number, because 306147269 - 2⁸ = 306147013 is a prime.

It is a super-2 number, since 2×306147269² = 187452300632316722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306147263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153073634 + 153073635.

It is an arithmetic number, because the mean of its divisors is an integer number (153073635).

Almost surely, 2^306147269 is an apocalyptic number.

It is an amenable number.

306147269 is a deficient number, since it is larger than the sum of its proper divisors (1).

306147269 is an equidigital number, since it uses as much as digits as its factorization.

306147269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 306147269 is about 17497.0645823807. The cubic root of 306147269 is about 673.9744969174.

The spelling of 306147269 in words is "three hundred six million, one hundred forty-seven thousand, two hundred sixty-nine".