1311006171 has 4 divisors (see below), whose sum is σ = 1748008232. Its totient is φ = 874004112.

The previous prime is 1311006149. The next prime is 1311006173. The reversal of 1311006171 is 1716001131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1311006171 - 2⁵ = 1311006139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311006173) 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 in 3 ways as a sum of consecutive naturals, for example, 218501026 + ... + 218501031.

It is an arithmetic number, because the mean of its divisors is an integer number (437002058).

Almost surely, 2^1311006171 is an apocalyptic number.

1311006171 is a deficient number, since it is larger than the sum of its proper divisors (437002061).

1311006171 is an equidigital number, since it uses as much as digits as its factorization.

1311006171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437002060.

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 1311006171 is about 36207.8191969635. The cubic root of 1311006171 is about 1094.4642461592.

The spelling of 1311006171 in words is "one billion, three hundred eleven million, six thousand, one hundred seventy-one".