1233113231 has 16 divisors (see below), whose sum is σ = 1443717120. Its totient is φ = 1031395680.

The previous prime is 1233113227. The next prime is 1233113269. The reversal of 1233113231 is 1323113321.

It is not a de Polignac number, because 1233113231 - 2² = 1233113227 is a prime.

It is a super-2 number, since 2×1233113231² = 3041136480934518722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233113131) 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, 42860 + ... + 65598.

It is an arithmetic number, because the mean of its divisors is an integer number (90232320).

Almost surely, 2^1233113231 is an apocalyptic number.

1233113231 is a deficient number, since it is larger than the sum of its proper divisors (210603889).

1233113231 is a wasteful number, since it uses less digits than its factorization.

1233113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22934.

The product of its digits is 324, while the sum is 20.

The square root of 1233113231 is about 35115.7120246764. The cubic root of 1233113231 is about 1072.3444766997.

Adding to 1233113231 its reverse (1323113321), we get a palindrome (2556226552).

The spelling of 1233113231 in words is "one billion, two hundred thirty-three million, one hundred thirteen thousand, two hundred thirty-one".