1320131171 has 2 divisors, whose sum is σ = 1320131172. Its totient is φ = 1320131170.

The previous prime is 1320131143. The next prime is 1320131173. The reversal of 1320131171 is 1711310231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320131171 is a prime.

Together with 1320131173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1320131173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660065585 + 660065586.

It is an arithmetic number, because the mean of its divisors is an integer number (660065586).

Almost surely, 2^1320131171 is an apocalyptic number.

1320131171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320131171 is an equidigital number, since it uses as much as digits as its factorization.

1320131171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 1320131171 is about 36333.6093858015. The cubic root of 1320131171 is about 1096.9976450184.

The spelling of 1320131171 in words is "one billion, three hundred twenty million, one hundred thirty-one thousand, one hundred seventy-one".