131171347 has 2 divisors, whose sum is σ = 131171348. Its totient is φ = 131171346.

The previous prime is 131171333. The next prime is 131171387. The reversal of 131171347 is 743171131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131171347 is a prime.

It is not a weakly prime, because it can be changed into another prime (131171387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65585673 + 65585674.

It is an arithmetic number, because the mean of its divisors is an integer number (65585674).

Almost surely, 2^131171347 is an apocalyptic number.

131171347 is a deficient number, since it is larger than the sum of its proper divisors (1).

131171347 is an equidigital number, since it uses as much as digits as its factorization.

131171347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 28.

The square root of 131171347 is about 11453.0060246208. The cubic root of 131171347 is about 508.0966436813.

The spelling of 131171347 in words is "one hundred thirty-one million, one hundred seventy-one thousand, three hundred forty-seven".