1131310233 has 10 divisors (see below), whose sum is σ = 1689982074. Its totient is φ = 754206768.

The previous prime is 1131310207. The next prime is 1131310241. The reversal of 1131310233 is 3320131311.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 865065744 + 266244489 = 29412^2 + 16317^2 .

It is not a de Polignac number, because 1131310233 - 2¹⁸ = 1131048089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131310283) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6983316 + ... + 6983477.

Almost surely, 2^1131310233 is an apocalyptic number.

It is an amenable number.

1131310233 is a deficient number, since it is larger than the sum of its proper divisors (558671841).

1131310233 is an equidigital number, since it uses as much as digits as its factorization.

1131310233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13966805 (or 13966796 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1131310233 is about 33634.9555224918. The cubic root of 1131310233 is about 1041.9828520381.

Adding to 1131310233 its reverse (3320131311), we get a palindrome (4451441544).

It can be divided in two parts, 1131 and 310233, that added together give a square (311364 = 558²).

The spelling of 1131310233 in words is "one billion, one hundred thirty-one million, three hundred ten thousand, two hundred thirty-three".