1131448 has 16 divisors (see below), whose sum is σ = 2134080. Its totient is φ = 562368.

The previous prime is 1131437. The next prime is 1131451. The reversal of 1131448 is 8441311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561 + ... + 2167.

It is an arithmetic number, because the mean of its divisors is an integer number (133380).

2^1131448 is an apocalyptic number.

It is an amenable number.

1131448 is a deficient number, since it is larger than the sum of its proper divisors (1002632).

1131448 is a wasteful number, since it uses less digits than its factorization.

1131448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 842 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 1131448 is about 1063.6954451346. The cubic root of 1131448 is about 104.2025146663.

Adding to 1131448 its reverse (8441311), we get a palindrome (9572759).

The spelling of 1131448 in words is "one million, one hundred thirty-one thousand, four hundred forty-eight".