307120949 has 2 divisors, whose sum is σ = 307120950. Its totient is φ = 307120948.

The previous prime is 307120871. The next prime is 307120967. The reversal of 307120949 is 949021703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305620324 + 1500625 = 17482^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 307120949 - 2¹² = 307116853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (307120049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153560474 + 153560475.

It is an arithmetic number, because the mean of its divisors is an integer number (153560475).

Almost surely, 2^307120949 is an apocalyptic number.

It is an amenable number.

307120949 is a deficient number, since it is larger than the sum of its proper divisors (1).

307120949 is an equidigital number, since it uses as much as digits as its factorization.

307120949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 307120949 is about 17524.8665900771. The cubic root of 307120949 is about 674.6882503703.

The spelling of 307120949 in words is "three hundred seven million, one hundred twenty thousand, nine hundred forty-nine".