316126549 has 2 divisors, whose sum is σ = 316126550. Its totient is φ = 316126548.

The previous prime is 316126511. The next prime is 316126571. The reversal of 316126549 is 945621613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224100900 + 92025649 = 14970^2 + 9593^2 .

It is a cyclic number.

It is not a de Polignac number, because 316126549 - 2⁹ = 316126037 is a prime.

It is equal to p_17077582 and since 316126549 and 17077582 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316127549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158063274 + 158063275.

It is an arithmetic number, because the mean of its divisors is an integer number (158063275).

Almost surely, 2^316126549 is an apocalyptic number.

It is an amenable number.

316126549 is a deficient number, since it is larger than the sum of its proper divisors (1).

316126549 is an equidigital number, since it uses as much as digits as its factorization.

316126549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 316126549 is about 17779.9479470554. The cubic root of 316126549 is about 681.2193728172.

The spelling of 316126549 in words is "three hundred sixteen million, one hundred twenty-six thousand, five hundred forty-nine".