315482081 has 2 divisors, whose sum is σ = 315482082. Its totient is φ = 315482080.

The previous prime is 315482077. The next prime is 315482113. The reversal of 315482081 is 180284513.

315482081 = 12559² + 12560².

It is an a-pointer prime, because the next prime (315482113) can be obtained adding 315482081 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157753600 + 157728481 = 12560^2 + 12559^2 .

It is a cyclic number.

It is not a de Polignac number, because 315482081 - 2² = 315482077 is a prime.

It is a super-2 number, since 2×315482081² = 199057886864181122, which contains 22 as substring.

It is equal to p_17044637 and since 315482081 and 17044637 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (315482051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157741040 + 157741041.

It is an arithmetic number, because the mean of its divisors is an integer number (157741041).

Almost surely, 2^315482081 is an apocalyptic number.

315482081 is the 12560-th centered square number.

It is an amenable number.

315482081 is a deficient number, since it is larger than the sum of its proper divisors (1).

315482081 is an equidigital number, since it uses as much as digits as its factorization.

315482081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 315482081 is about 17761.8152507000. The cubic root of 315482081 is about 680.7561376943.

The spelling of 315482081 in words is "three hundred fifteen million, four hundred eighty-two thousand, eighty-one".