1131208 has 32 divisors (see below), whose sum is σ = 2331000. Its totient is φ = 511488.

The previous prime is 1131191. The next prime is 1131217. The reversal of 1131208 is 8021311.

It can be written as a sum of positive squares in 4 ways, for example, as 580644 + 550564 = 762^2 + 742^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1131191 and 1131200.

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 7 ways as a sum of consecutive naturals, for example, 7518 + ... + 7666.

2^1131208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1165500).

1131208 is an abundant number, since it is smaller than the sum of its proper divisors (1199792).

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

1131208 is a wasteful number, since it uses less digits than its factorization.

1131208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1131208 is about 1063.5826249051. The cubic root of 1131208 is about 104.1951464172.

Adding to 1131208 its reverse (8021311), we get a palindrome (9152519).

The spelling of 1131208 in words is "one million, one hundred thirty-one thousand, two hundred eight".