315294487 has 2 divisors, whose sum is σ = 315294488. Its totient is φ = 315294486.

The previous prime is 315294437. The next prime is 315294491. The reversal of 315294487 is 784492513.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315294487 is a prime.

It is a super-2 number, since 2×315294487² = 198821227065186338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315294437) 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, 157647243 + 157647244.

It is an arithmetic number, because the mean of its divisors is an integer number (157647244).

Almost surely, 2^315294487 is an apocalyptic number.

315294487 is a deficient number, since it is larger than the sum of its proper divisors (1).

315294487 is an equidigital number, since it uses as much as digits as its factorization.

315294487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 315294487 is about 17756.5336425779. The cubic root of 315294487 is about 680.6211790650.

The spelling of 315294487 in words is "three hundred fifteen million, two hundred ninety-four thousand, four hundred eighty-seven".