1131441 has 4 divisors (see below), whose sum is σ = 1508592. Its totient is φ = 754292.

The previous prime is 1131437. The next prime is 1131451. The reversal of 1131441 is 1441311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1131441 - 2² = 1131437 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131441.

It is not an unprimeable number, because it can be changed into a prime (1131421) 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, 188571 + ... + 188576.

It is an arithmetic number, because the mean of its divisors is an integer number (377148).

2^1131441 is an apocalyptic number.

It is an amenable number.

1131441 is a deficient number, since it is larger than the sum of its proper divisors (377151).

1131441 is an equidigital number, since it uses as much as digits as its factorization.

1131441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377150.

The product of its digits is 48, while the sum is 15.

The square root of 1131441 is about 1063.6921547139. The cubic root of 1131441 is about 104.2022997738.

Adding to 1131441 its reverse (1441311), we get a palindrome (2572752).

The spelling of 1131441 in words is "one million, one hundred thirty-one thousand, four hundred forty-one".