1211231 has 12 divisors (see below), whose sum is σ = 1484280. Its totient is φ = 982800.

The previous prime is 1211227. The next prime is 1211261. The reversal of 1211231 is 1321121.

It is not a de Polignac number, because 1211231 - 2² = 1211227 is a prime.

It is a super-2 number, since 2×1211231² = 2934161070722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281 + ... + 1581.

It is an arithmetic number, because the mean of its divisors is an integer number (123690).

2^1211231 is an apocalyptic number.

1211231 is a deficient number, since it is larger than the sum of its proper divisors (273049).

1211231 is a wasteful number, since it uses less digits than its factorization.

1211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1327 counting only the distinct ones).

The product of its digits is 12, while the sum is 11.

The square root of 1211231 is about 1100.5594032127. The cubic root of 1211231 is about 106.5963479677.

Adding to 1211231 its reverse (1321121), we get a palindrome (2532352).

The spelling of 1211231 in words is "one million, two hundred eleven thousand, two hundred thirty-one".