1131443 has 8 divisors (see below), whose sum is σ = 1167360. Its totient is φ = 1096200.

The previous prime is 1131437. The next prime is 1131451. The reversal of 1131443 is 3441311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131443 - 2⁶ = 1131379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7418 + ... + 7568.

It is an arithmetic number, because the mean of its divisors is an integer number (145920).

2^1131443 is an apocalyptic number.

1131443 is a deficient number, since it is larger than the sum of its proper divisors (35917).

1131443 is a wasteful number, since it uses less digits than its factorization.

1131443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337.

The product of its digits is 144, while the sum is 17.

The square root of 1131443 is about 1063.6930948352. The cubic root of 1131443 is about 104.2023611717.

Adding to 1131443 its reverse (3441311), we get a palindrome (4572754).

The spelling of 1131443 in words is "one million, one hundred thirty-one thousand, four hundred forty-three".