1115315171 has 2 divisors, whose sum is σ = 1115315172. Its totient is φ = 1115315170.

The previous prime is 1115315137. The next prime is 1115315191. The reversal of 1115315171 is 1715135111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115315171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1115315171.

It is not a weakly prime, because it can be changed into another prime (1115315191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557657585 + 557657586.

It is an arithmetic number, because the mean of its divisors is an integer number (557657586).

Almost surely, 2^1115315171 is an apocalyptic number.

1115315171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115315171 is an equidigital number, since it uses as much as digits as its factorization.

1115315171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 525, while the sum is 26.

The square root of 1115315171 is about 33396.3346940948. The cubic root of 1115315171 is about 1037.0488237321.

The spelling of 1115315171 in words is "one billion, one hundred fifteen million, three hundred fifteen thousand, one hundred seventy-one".