1133144231 has 16 divisors (see below), whose sum is σ = 1252830240. Its totient is φ = 1020042240.

The previous prime is 1133144227. The next prime is 1133144273. The reversal of 1133144231 is 1324413311.

It is a cyclic number.

It is not a de Polignac number, because 1133144231 - 2² = 1133144227 is a prime.

It is a super-2 number, since 2×1133144231² = 2568031696497162722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1133144197 and 1133144206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133144281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42011 + ... + 63491.

It is an arithmetic number, because the mean of its divisors is an integer number (78301890).

Almost surely, 2^1133144231 is an apocalyptic number.

1133144231 is a deficient number, since it is larger than the sum of its proper divisors (119686009).

1133144231 is a wasteful number, since it uses less digits than its factorization.

1133144231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21634.

The product of its digits is 864, while the sum is 23.

The square root of 1133144231 is about 33662.2077558796. The cubic root of 1133144231 is about 1042.5456103587.

Adding to 1133144231 its reverse (1324413311), we get a palindrome (2457557542).

The spelling of 1133144231 in words is "one billion, one hundred thirty-three million, one hundred forty-four thousand, two hundred thirty-one".