1131392 has 16 divisors (see below), whose sum is σ = 2254200. Its totient is φ = 565632.

The previous prime is 1131379. The next prime is 1131397. The reversal of 1131392 is 2931311.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4292 + ... + 4547.

2^1131392 is an apocalyptic number.

It is an amenable number.

1131392 is a deficient number, since it is larger than the sum of its proper divisors (1122808).

1131392 is an frugal number, since it uses more digits than its factorization.

1131392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8853 (or 8841 counting only the distinct ones).

The product of its digits is 162, while the sum is 20.

The square root of 1131392 is about 1063.6691214847. The cubic root of 1131392 is about 104.2007955014.

The spelling of 1131392 in words is "one million, one hundred thirty-one thousand, three hundred ninety-two".