1131404 has 6 divisors (see below), whose sum is σ = 1979964. Its totient is φ = 565700.

The previous prime is 1131397. The next prime is 1131413. The reversal of 1131404 is 4041311.

It is a happy number.

It is a super-2 number, since 2×1131404² = 2560150022432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141422 + ... + 141429.

It is an arithmetic number, because the mean of its divisors is an integer number (329994).

2^1131404 is an apocalyptic number.

It is an amenable number.

1131404 is a deficient number, since it is larger than the sum of its proper divisors (848560).

1131404 is a wasteful number, since it uses less digits than its factorization.

1131404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282855 (or 282853 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1131404 is about 1063.6747623216. The cubic root of 1131404 is about 104.2011638986.

Adding to 1131404 its reverse (4041311), we get a palindrome (5172715).

The spelling of 1131404 in words is "one million, one hundred thirty-one thousand, four hundred four".