813316487 has 2 divisors, whose sum is σ = 813316488. Its totient is φ = 813316486.

The previous prime is 813316453. The next prime is 813316519. The reversal of 813316487 is 784613318.

813316487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 813316487 - 2²² = 809122183 is a prime.

It is a super-2 number, since 2×813316487² = 1322967416052042338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813316447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406658243 + 406658244.

It is an arithmetic number, because the mean of its divisors is an integer number (406658244).

Almost surely, 2^813316487 is an apocalyptic number.

813316487 is a deficient number, since it is larger than the sum of its proper divisors (1).

813316487 is an equidigital number, since it uses as much as digits as its factorization.

813316487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 813316487 is about 28518.7041606031. The cubic root of 813316487 is about 933.4402534682.

The spelling of 813316487 in words is "eight hundred thirteen million, three hundred sixteen thousand, four hundred eighty-seven".