1131488 has 24 divisors (see below), whose sum is σ = 2346120. Its totient is φ = 535680.

The previous prime is 1131479. The next prime is 1131491. The reversal of 1131488 is 8841311.

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, 323 + ... + 1538.

It is an arithmetic number, because the mean of its divisors is an integer number (97755).

2^1131488 is an apocalyptic number.

It is an amenable number.

1131488 is an abundant number, since it is smaller than the sum of its proper divisors (1214632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131488 is a wasteful number, since it uses less digits than its factorization.

1131488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890 (or 1882 counting only the distinct ones).

The product of its digits is 768, while the sum is 26.

The square root of 1131488 is about 1063.7142473428. The cubic root of 1131488 is about 104.2037426065.

Adding to 1131488 its reverse (8841311), we get a palindrome (9972799).

The spelling of 1131488 in words is "one million, one hundred thirty-one thousand, four hundred eighty-eight".