315603509791 has 2 divisors, whose sum is σ = 315603509792. Its totient is φ = 315603509790.

The previous prime is 315603509777. The next prime is 315603509833. The reversal of 315603509791 is 197905306513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315603509791 - 2²³ = 315595121183 is a prime.

It is a super-3 number, since 3×315603509791³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315603509701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157801754895 + 157801754896.

It is an arithmetic number, because the mean of its divisors is an integer number (157801754896).

Almost surely, 2^315603509791 is an apocalyptic number.

315603509791 is a deficient number, since it is larger than the sum of its proper divisors (1).

315603509791 is an equidigital number, since it uses as much as digits as its factorization.

315603509791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 765450, while the sum is 49.

The spelling of 315603509791 in words is "three hundred fifteen billion, six hundred three million, five hundred nine thousand, seven hundred ninety-one".