1133544231 has 24 divisors (see below), whose sum is σ = 1685502000. Its totient is φ = 733764096.

The previous prime is 1133544229. The next prime is 1133544263. The reversal of 1133544231 is 1324453311.

It is a happy number.

1133544231 is a `hidden beast` number, since 113 + 3 + 544 + 2 + 3 + 1 = 666.

It is not a de Polignac number, because 1133544231 - 2¹ = 1133544229 is a prime.

It is a super-2 number, since 2×1133544231² = 2569845047266762722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1133544195 and 1133544204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133544281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34020 + ... + 58518.

It is an arithmetic number, because the mean of its divisors is an integer number (70229250).

Almost surely, 2^1133544231 is an apocalyptic number.

1133544231 is a deficient number, since it is larger than the sum of its proper divisors (551957769).

1133544231 is a wasteful number, since it uses less digits than its factorization.

1133544231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24655 (or 24652 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1133544231 is about 33668.1486125982. The cubic root of 1133544231 is about 1042.6682688204.

Adding to 1133544231 its reverse (1324453311), we get a palindrome (2457997542).

The spelling of 1133544231 in words is "one billion, one hundred thirty-three million, five hundred forty-four thousand, two hundred thirty-one".