316817869 has 2 divisors, whose sum is σ = 316817870. Its totient is φ = 316817868.

The previous prime is 316817857. The next prime is 316817909. The reversal of 316817869 is 968718613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297148644 + 19669225 = 17238^2 + 4435^2 .

It is a cyclic number.

It is not a de Polignac number, because 316817869 - 2²¹ = 314720717 is a prime.

It is a super-2 number, since 2×316817869² = 200747124235402322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316817819) 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, 158408934 + 158408935.

It is an arithmetic number, because the mean of its divisors is an integer number (158408935).

Almost surely, 2^316817869 is an apocalyptic number.

It is an amenable number.

316817869 is a deficient number, since it is larger than the sum of its proper divisors (1).

316817869 is an equidigital number, since it uses as much as digits as its factorization.

316817869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 316817869 is about 17799.3783318407. The cubic root of 316817869 is about 681.7155851761.

The spelling of 316817869 in words is "three hundred sixteen million, eight hundred seventeen thousand, eight hundred sixty-nine".