1133228531 has 4 divisors (see below), whose sum is σ = 1133295912. Its totient is φ = 1133161152.

The previous prime is 1133228527. The next prime is 1133228581. The reversal of 1133228531 is 1358223311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1358223311 = 22369 ⋅60719.

It is a cyclic number.

It is not a de Polignac number, because 1133228531 - 2² = 1133228527 is a prime.

It is a super-2 number, since 2×1133228531² = 2568413806944835922, 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 = 1133228494 and 1133228503.

It is not an unprimeable number, because it can be changed into a prime (1133228521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14840 + ... + 49866.

It is an arithmetic number, because the mean of its divisors is an integer number (283323978).

Almost surely, 2^1133228531 is an apocalyptic number.

1133228531 is a deficient number, since it is larger than the sum of its proper divisors (67381).

1133228531 is an equidigital number, since it uses as much as digits as its factorization.

1133228531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67380.

The product of its digits is 4320, while the sum is 29.

The square root of 1133228531 is about 33663.4598786280. The cubic root of 1133228531 is about 1042.5714630299.

The spelling of 1133228531 in words is "one billion, one hundred thirty-three million, two hundred twenty-eight thousand, five hundred thirty-one".