307161157 has 2 divisors, whose sum is σ = 307161158. Its totient is φ = 307161156.

The previous prime is 307161137. The next prime is 307161167. The reversal of 307161157 is 751161703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293128641 + 14032516 = 17121^2 + 3746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-307161157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (307161137) 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, 153580578 + 153580579.

It is an arithmetic number, because the mean of its divisors is an integer number (153580579).

Almost surely, 2^307161157 is an apocalyptic number.

It is an amenable number.

307161157 is a deficient number, since it is larger than the sum of its proper divisors (1).

307161157 is an equidigital number, since it uses as much as digits as its factorization.

307161157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 307161157 is about 17526.0137224641. The cubic root of 307161157 is about 674.7176922797.

The spelling of 307161157 in words is "three hundred seven million, one hundred sixty-one thousand, one hundred fifty-seven".