320835157 has 2 divisors, whose sum is σ = 320835158. Its totient is φ = 320835156.

The previous prime is 320835143. The next prime is 320835161. The reversal of 320835157 is 751538023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283551921 + 37283236 = 16839^2 + 6106^2 .

It is a cyclic number.

It is not a de Polignac number, because 320835157 - 2¹⁵ = 320802389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320835167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160417578 + 160417579.

It is an arithmetic number, because the mean of its divisors is an integer number (160417579).

Almost surely, 2^320835157 is an apocalyptic number.

It is an amenable number.

320835157 is a deficient number, since it is larger than the sum of its proper divisors (1).

320835157 is an equidigital number, since it uses as much as digits as its factorization.

320835157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 320835157 is about 17911.8719568894. The cubic root of 320835157 is about 684.5849027533.

The spelling of 320835157 in words is "three hundred twenty million, eight hundred thirty-five thousand, one hundred fifty-seven".