1131269 has 2 divisors, whose sum is σ = 1131270. Its totient is φ = 1131268.

The previous prime is 1131259. The next prime is 1131271. The reversal of 1131269 is 9621311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 702244 + 429025 = 838^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131269 - 2⁴ = 1131253 is a prime.

It is a super-2 number, since 2×1131269² = 2559539100722, which contains 22 as substring.

Together with 1131271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565634 + 565635.

It is an arithmetic number, because the mean of its divisors is an integer number (565635).

2^1131269 is an apocalyptic number.

It is an amenable number.

1131269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131269 is an equidigital number, since it uses as much as digits as its factorization.

1131269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 23.

The square root of 1131269 is about 1063.6113011810. The cubic root of 1131269 is about 104.1970192793.

The spelling of 1131269 in words is "one million, one hundred thirty-one thousand, two hundred sixty-nine".