307012109 has 2 divisors, whose sum is σ = 307012110. Its totient is φ = 307012108.

The previous prime is 307012049. The next prime is 307012117. The reversal of 307012109 is 901210703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207072100 + 99940009 = 14390^2 + 9997^2 .

It is a cyclic number.

It is not a de Polignac number, because 307012109 - 2⁸ = 307011853 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (307032109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153506054 + 153506055.

It is an arithmetic number, because the mean of its divisors is an integer number (153506055).

Almost surely, 2^307012109 is an apocalyptic number.

It is an amenable number.

307012109 is a deficient number, since it is larger than the sum of its proper divisors (1).

307012109 is an equidigital number, since it uses as much as digits as its factorization.

307012109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 307012109 is about 17521.7610130945. The cubic root of 307012109 is about 674.6085404648.

The spelling of 307012109 in words is "three hundred seven million, twelve thousand, one hundred nine".