1131608 has 16 divisors (see below), whose sum is σ = 2179680. Its totient is φ = 550368.

The previous prime is 1131569. The next prime is 1131617. The reversal of 1131608 is 8061311.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1131608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616 + ... + 2207.

It is an arithmetic number, because the mean of its divisors is an integer number (136230).

2^1131608 is an apocalyptic number.

It is an amenable number.

1131608 is a deficient number, since it is larger than the sum of its proper divisors (1048072).

1131608 is a wasteful number, since it uses less digits than its factorization.

1131608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866 (or 3862 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1131608 is about 1063.7706519734. The cubic root of 1131608 is about 104.2074262535.

Adding to 1131608 its reverse (8061311), we get a palindrome (9192919).

The spelling of 1131608 in words is "one million, one hundred thirty-one thousand, six hundred eight".