1213271 has 2 divisors, whose sum is σ = 1213272. Its totient is φ = 1213270.

The previous prime is 1213259. The next prime is 1213301. The reversal of 1213271 is 1723121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606635 + 606636.

It is an arithmetic number, because the mean of its divisors is an integer number (606636).

2^1213271 is an apocalyptic number.

1213271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213271 is an equidigital number, since it uses as much as digits as its factorization.

1213271 is an evil number, because the sum of its binary digits is even.

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

The square root of 1213271 is about 1101.4858147067. The cubic root of 1213271 is about 106.6561589041.

Adding to 1213271 its reverse (1723121), we get a palindrome (2936392).

The spelling of 1213271 in words is "one million, two hundred thirteen thousand, two hundred seventy-one".