307120993 has 2 divisors, whose sum is σ = 307120994. Its totient is φ = 307120992.

The previous prime is 307120967. The next prime is 307121011. The reversal of 307120993 is 399021703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230523489 + 76597504 = 15183^2 + 8752^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-307120993 is a prime.

It is not a weakly prime, because it can be changed into another prime (307120393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153560496 + 153560497.

It is an arithmetic number, because the mean of its divisors is an integer number (153560497).

Almost surely, 2^307120993 is an apocalyptic number.

It is an amenable number.

307120993 is a deficient number, since it is larger than the sum of its proper divisors (1).

307120993 is an equidigital number, since it uses as much as digits as its factorization.

307120993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 307120993 is about 17524.8678454361. The cubic root of 307120993 is about 674.6882825903.

The spelling of 307120993 in words is "three hundred seven million, one hundred twenty thousand, nine hundred ninety-three".