1131994 has 4 divisors (see below), whose sum is σ = 1697994. Its totient is φ = 565996.

The previous prime is 1131973. The next prime is 1131997. The reversal of 1131994 is 4991311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1129969 + 2025 = 1063^2 + 45^2 .

It is not an unprimeable number, because it can be changed into a prime (1131997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282997 + ... + 283000.

2^1131994 is an apocalyptic number.

1131994 is a deficient number, since it is larger than the sum of its proper divisors (566000).

1131994 is an equidigital number, since it uses as much as digits as its factorization.

1131994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565999.

The product of its digits is 972, while the sum is 28.

The square root of 1131994 is about 1063.9520665895. The cubic root of 1131994 is about 104.2192735521.

The spelling of 1131994 in words is "one million, one hundred thirty-one thousand, nine hundred ninety-four".