1131023233 has 8 divisors (see below), whose sum is σ = 1152883368. Its totient is φ = 1109182464.

The previous prime is 1131023227. The next prime is 1131023239. The reversal of 1131023233 is 3323201311.

It is an interprime number because it is at equal distance from previous prime (1131023227) and next prime (1131023239).

It can be written as a sum of positive squares in 4 ways, for example, as 33558849 + 1097464384 = 5793^2 + 33128^2 .

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 1131023233 - 2⁹ = 1131022721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131023233.

It is not an unprimeable number, because it can be changed into a prime (1131023239) 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, 180135 + ... + 186307.

It is an arithmetic number, because the mean of its divisors is an integer number (144110421).

Almost surely, 2^1131023233 is an apocalyptic number.

It is an amenable number.

1131023233 is a deficient number, since it is larger than the sum of its proper divisors (21860135).

1131023233 is an equidigital number, since it uses as much as digits as its factorization.

1131023233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9683.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1131023233 is about 33630.6888570544. The cubic root of 1131023233 is about 1041.8947316853.

Adding to 1131023233 its reverse (3323201311), we get a palindrome (4454224544).

It can be divided in two parts, 11310 and 23233, that added together give a palindrome (34543).

The spelling of 1131023233 in words is "one billion, one hundred thirty-one million, twenty-three thousand, two hundred thirty-three".