1233120231 has 36 divisors (see below), whose sum is σ = 2075392800. Its totient is φ = 703479168.

The previous prime is 1233120199. The next prime is 1233120241. The reversal of 1233120231 is 1320213321.

1233120231 is a `hidden beast` number, since 123 + 312 + 0 + 231 = 666.

It is not a de Polignac number, because 1233120231 - 2⁵ = 1233120199 is a prime.

It is a super-2 number, since 2×1233120231² = 3041171008202986722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233120241) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 315135 + ... + 319023.

It is an arithmetic number, because the mean of its divisors is an integer number (57649800).

Almost surely, 2^1233120231 is an apocalyptic number.

1233120231 is a deficient number, since it is larger than the sum of its proper divisors (842272569).

1233120231 is a wasteful number, since it uses less digits than its factorization.

1233120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628 (or 4618 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1233120231 is about 35115.8116950185. The cubic root of 1233120231 is about 1072.3465058178.

Adding to 1233120231 its reverse (1320213321), we get a palindrome (2553333552).

The spelling of 1233120231 in words is "one billion, two hundred thirty-three million, one hundred twenty thousand, two hundred thirty-one".