1347971 has 2 divisors, whose sum is σ = 1347972. Its totient is φ = 1347970.

The previous prime is 1347967. The next prime is 1347989. The reversal of 1347971 is 1797431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1347971 - 2² = 1347967 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1347901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673985 + 673986.

It is an arithmetic number, because the mean of its divisors is an integer number (673986).

2^1347971 is an apocalyptic number.

1347971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1347971 is an equidigital number, since it uses as much as digits as its factorization.

1347971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 32.

The square root of 1347971 is about 1161.0215329614. The cubic root of 1347971 is about 110.4655475676.

The spelling of 1347971 in words is "one million, three hundred forty-seven thousand, nine hundred seventy-one".