1230111233 has 16 divisors (see below), whose sum is σ = 1359133776. Its totient is φ = 1106088960.

The previous prime is 1230111203. The next prime is 1230111257. The reversal of 1230111233 is 3321110321.

It can be written as a sum of positive squares in 8 ways, for example, as 85507009 + 1144604224 = 9247^2 + 33832^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230111233 - 2²⁰ = 1229062657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1230111203) 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, 455435 + ... + 458127.

It is an arithmetic number, because the mean of its divisors is an integer number (84945861).

Almost surely, 2^1230111233 is an apocalyptic number.

1230111233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1230111233 is a deficient number, since it is larger than the sum of its proper divisors (129022543).

1230111233 is a wasteful number, since it uses less digits than its factorization.

1230111233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1230111233 is about 35072.9416074557. The cubic root of 1230111233 is about 1071.4735667190.

Adding to 1230111233 its reverse (3321110321), we get a palindrome (4551221554).

The spelling of 1230111233 in words is "one billion, two hundred thirty million, one hundred eleven thousand, two hundred thirty-three".