1321271 has 4 divisors (see below), whose sum is σ = 1510032. Its totient is φ = 1132512.

The previous prime is 1321267. The next prime is 1321273. The reversal of 1321271 is 1721231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1721231 = 127 ⋅13553.

It is a cyclic number.

It is not a de Polignac number, because 1321271 - 2² = 1321267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94370 + ... + 94383.

It is an arithmetic number, because the mean of its divisors is an integer number (377508).

2^1321271 is an apocalyptic number.

1321271 is a deficient number, since it is larger than the sum of its proper divisors (188761).

1321271 is an equidigital number, since it uses as much as digits as its factorization.

1321271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188760.

The product of its digits is 84, while the sum is 17.

The square root of 1321271 is about 1149.4655279738. The cubic root of 1321271 is about 109.7313277802.

The spelling of 1321271 in words is "one million, three hundred twenty-one thousand, two hundred seventy-one".