1135631 has 8 divisors (see below), whose sum is σ = 1322784. Its totient is φ = 954720.

The previous prime is 1135619. The next prime is 1135633. The reversal of 1135631 is 1365311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1135631 - 2¹⁰ = 1134607 is a prime.

It is a super-3 number, since 3×1135631³ = 4393726022743333773, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135633) 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, 1160 + ... + 1901.

It is an arithmetic number, because the mean of its divisors is an integer number (165348).

2^1135631 is an apocalyptic number.

1135631 is a deficient number, since it is larger than the sum of its proper divisors (187153).

1135631 is an equidigital number, since it uses as much as digits as its factorization.

1135631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121.

The product of its digits is 270, while the sum is 20.

The square root of 1135631 is about 1065.6598894582. The cubic root of 1135631 is about 104.3307701013.

The spelling of 1135631 in words is "one million, one hundred thirty-five thousand, six hundred thirty-one".