1271383 has 2 divisors, whose sum is σ = 1271384. Its totient is φ = 1271382.

The previous prime is 1271359. The next prime is 1271393. The reversal of 1271383 is 3831721.

It is a strong prime.

It is an emirp because it is prime and its reverse (3831721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1271383 - 2⁵ = 1271351 is a prime.

It is an Ulam number.

1271383 is a lucky number.

It is equal to p₉₈₀₀₈ and since 1271383 and 98008 have the same sum of digits, it is a Honaker 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, 635691 + 635692.

It is an arithmetic number, because the mean of its divisors is an integer number (635692).

2^1271383 is an apocalyptic number.

1271383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271383 is an equidigital number, since it uses as much as digits as its factorization.

1271383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 1271383 is about 1127.5562070247. The cubic root of 1271383 is about 108.3325086065.

The spelling of 1271383 in words is "one million, two hundred seventy-one thousand, three hundred eighty-three".