320157377 has 2 divisors, whose sum is σ = 320157378. Its totient is φ = 320157376.

The previous prime is 320157359. The next prime is 320157443. The reversal of 320157377 is 773751023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242082481 + 78074896 = 15559^2 + 8836^2 .

It is a cyclic number.

It is not a de Polignac number, because 320157377 - 2²⁸ = 51721921 is a prime.

It is not a weakly prime, because it can be changed into another prime (320157977) 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, 160078688 + 160078689.

It is an arithmetic number, because the mean of its divisors is an integer number (160078689).

Almost surely, 2^320157377 is an apocalyptic number.

It is an amenable number.

320157377 is a deficient number, since it is larger than the sum of its proper divisors (1).

320157377 is an equidigital number, since it uses as much as digits as its factorization.

320157377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30870, while the sum is 35.

The square root of 320157377 is about 17892.9421001690. The cubic root of 320157377 is about 684.1024898290.

The spelling of 320157377 in words is "three hundred twenty million, one hundred fifty-seven thousand, three hundred seventy-seven".