1271231 has 4 divisors (see below), whose sum is σ = 1369032. Its totient is φ = 1173432.

The previous prime is 1271227. The next prime is 1271239. The reversal of 1271231 is 1321721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321721 = 223 ⋅5927.

It is not a de Polignac number, because 1271231 - 2² = 1271227 is a prime.

It is a super-2 number, since 2×1271231² = 3232056510722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271239) 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, 48881 + ... + 48906.

It is an arithmetic number, because the mean of its divisors is an integer number (342258).

2^1271231 is an apocalyptic number.

1271231 is a deficient number, since it is larger than the sum of its proper divisors (97801).

1271231 is an equidigital number, since it uses as much as digits as its factorization.

1271231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97800.

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

The square root of 1271231 is about 1127.4888026052. The cubic root of 1271231 is about 108.3281912089.

Adding to 1271231 its reverse (1321721), we get a palindrome (2592952).

The spelling of 1271231 in words is "one million, two hundred seventy-one thousand, two hundred thirty-one".