316157729 has 2 divisors, whose sum is σ = 316157730. Its totient is φ = 316157728.

The previous prime is 316157713. The next prime is 316157741. The reversal of 316157729 is 927751613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285610000 + 30547729 = 16900^2 + 5527^2 .

It is a cyclic number.

It is not a de Polignac number, because 316157729 - 2⁴ = 316157713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (316150729) 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, 158078864 + 158078865.

It is an arithmetic number, because the mean of its divisors is an integer number (158078865).

Almost surely, 2^316157729 is an apocalyptic number.

It is an amenable number.

316157729 is a deficient number, since it is larger than the sum of its proper divisors (1).

316157729 is an equidigital number, since it uses as much as digits as its factorization.

316157729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 41.

The square root of 316157729 is about 17780.8247558993. The cubic root of 316157729 is about 681.2417686181.

The spelling of 316157729 in words is "three hundred sixteen million, one hundred fifty-seven thousand, seven hundred twenty-nine".