306222047 has 2 divisors, whose sum is σ = 306222048. Its totient is φ = 306222046.

The previous prime is 306222043. The next prime is 306222067. The reversal of 306222047 is 740222603.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 306222047 - 2² = 306222043 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306222043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153111023 + 153111024.

It is an arithmetic number, because the mean of its divisors is an integer number (153111024).

Almost surely, 2^306222047 is an apocalyptic number.

306222047 is a deficient number, since it is larger than the sum of its proper divisors (1).

306222047 is an equidigital number, since it uses as much as digits as its factorization.

306222047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 306222047 is about 17499.2013246319. The cubic root of 306222047 is about 674.0293663296.

The spelling of 306222047 in words is "three hundred six million, two hundred twenty-two thousand, forty-seven".