1133531 has 8 divisors (see below), whose sum is σ = 1311744. Its totient is φ = 959400.

The previous prime is 1133519. The next prime is 1133533. The reversal of 1133531 is 1353311.

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 1133531 - 2⁶ = 1133467 is a prime.

It is a super-2 number, since 2×1133531² = 2569785055922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1133533) 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, 395 + ... + 1556.

It is an arithmetic number, because the mean of its divisors is an integer number (163968).

2^1133531 is an apocalyptic number.

1133531 is a deficient number, since it is larger than the sum of its proper divisors (178213).

1133531 is an equidigital number, since it uses as much as digits as its factorization.

1133531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041.

The product of its digits is 135, while the sum is 17.

The square root of 1133531 is about 1064.6741285483. The cubic root of 1133531 is about 104.2664212047.

Adding to 1133531 its reverse (1353311), we get a palindrome (2486842).

The spelling of 1133531 in words is "one million, one hundred thirty-three thousand, five hundred thirty-one".