316866881 has 2 divisors, whose sum is σ = 316866882. Its totient is φ = 316866880.

The previous prime is 316866877. The next prime is 316866923. The reversal of 316866881 is 188668613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313856656 + 3010225 = 17716^2 + 1735^2 .

It is a cyclic number.

It is not a de Polignac number, because 316866881 - 2² = 316866877 is a prime.

It is a super-2 number, since 2×316866881² = 200809240549336322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (316866811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158433440 + 158433441.

It is an arithmetic number, because the mean of its divisors is an integer number (158433441).

Almost surely, 2^316866881 is an apocalyptic number.

It is an amenable number.

316866881 is a deficient number, since it is larger than the sum of its proper divisors (1).

316866881 is an equidigital number, since it uses as much as digits as its factorization.

316866881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 47.

The square root of 316866881 is about 17800.7550682548. The cubic root of 316866881 is about 681.7507373616.

The spelling of 316866881 in words is "three hundred sixteen million, eight hundred sixty-six thousand, eight hundred eighty-one".