315941281 has 2 divisors, whose sum is σ = 315941282. Its totient is φ = 315941280.

The previous prime is 315941257. The next prime is 315941287. The reversal of 315941281 is 182149513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249355681 + 66585600 = 15791^2 + 8160^2 .

It is a cyclic number.

It is not a de Polignac number, because 315941281 - 2¹¹ = 315939233 is a prime.

It is a super-2 number, since 2×315941281² = 199637786079841922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315941287) 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, 157970640 + 157970641.

It is an arithmetic number, because the mean of its divisors is an integer number (157970641).

Almost surely, 2^315941281 is an apocalyptic number.

It is an amenable number.

315941281 is a deficient number, since it is larger than the sum of its proper divisors (1).

315941281 is an equidigital number, since it uses as much as digits as its factorization.

315941281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 315941281 is about 17774.7371569877. The cubic root of 315941281 is about 681.0862691448.

The spelling of 315941281 in words is "three hundred fifteen million, nine hundred forty-one thousand, two hundred eighty-one".