231013233 has 12 divisors (see below), whose sum is σ = 364021008. Its totient is φ = 140007960.

The previous prime is 231013199. The next prime is 231013247. The reversal of 231013233 is 332310132.

It is not a de Polignac number, because 231013233 - 2⁹ = 231012721 is a prime.

It is a super-2 number, since 2×231013233² = 106734227642224578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231013033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1166635 + ... + 1166832.

It is an arithmetic number, because the mean of its divisors is an integer number (30335084).

Almost surely, 2^231013233 is an apocalyptic number.

It is an amenable number.

231013233 is a deficient number, since it is larger than the sum of its proper divisors (133007775).

231013233 is a wasteful number, since it uses less digits than its factorization.

231013233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333484 (or 2333481 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 231013233 is about 15199.1194810752. The cubic root of 231013233 is about 613.5909601842.

Adding to 231013233 its reverse (332310132), we get a palindrome (563323365).

The spelling of 231013233 in words is "two hundred thirty-one million, thirteen thousand, two hundred thirty-three".