1271351 has 2 divisors, whose sum is σ = 1271352. Its totient is φ = 1271350.

The previous prime is 1271339. The next prime is 1271353. The reversal of 1271351 is 1531721.

It is a strong prime.

It is an emirp because it is prime and its reverse (1531721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1271351 - 2¹⁰ = 1270327 is a prime.

It is a Sophie Germain prime.

Together with 1271353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1271353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635675 + 635676.

It is an arithmetic number, because the mean of its divisors is an integer number (635676).

2^1271351 is an apocalyptic number.

1271351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271351 is an equidigital number, since it uses as much as digits as its factorization.

1271351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 210, while the sum is 20.

The square root of 1271351 is about 1127.5420169555. The cubic root of 1271351 is about 108.3315997093.

The spelling of 1271351 in words is "one million, two hundred seventy-one thousand, three hundred fifty-one".