315115543 has 2 divisors, whose sum is σ = 315115544. Its totient is φ = 315115542.

The previous prime is 315115531. The next prime is 315115547. The reversal of 315115543 is 345511513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315115543 - 2⁵ = 315115511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315115547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157557771 + 157557772.

It is an arithmetic number, because the mean of its divisors is an integer number (157557772).

Almost surely, 2^315115543 is an apocalyptic number.

315115543 is a deficient number, since it is larger than the sum of its proper divisors (1).

315115543 is an equidigital number, since it uses as much as digits as its factorization.

315115543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4500, while the sum is 28.

The square root of 315115543 is about 17751.4941061309. The cubic root of 315115543 is about 680.4923935120.

The spelling of 315115543 in words is "three hundred fifteen million, one hundred fifteen thousand, five hundred forty-three".