1131656 has 32 divisors (see below), whose sum is σ = 2303640. Its totient is φ = 519168.

The previous prime is 1131653. The next prime is 1131671. The reversal of 1131656 is 6561311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1069156 + 62500 = 1034^2 + 250^2 .

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1131653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7130 + ... + 7286.

2^1131656 is an apocalyptic number.

It is an amenable number.

1131656 is an abundant number, since it is smaller than the sum of its proper divisors (1171984).

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

1131656 is a wasteful number, since it uses less digits than its factorization.

1131656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 229 counting only the distinct ones).

The product of its digits is 540, while the sum is 23.

The square root of 1131656 is about 1063.7932129883. The cubic root of 1131656 is about 104.2088996393.

Adding to 1131656 its reverse (6561311), we get a palindrome (7692967).

The spelling of 1131656 in words is "one million, one hundred thirty-one thousand, six hundred fifty-six".