230031133 has 4 divisors (see below), whose sum is σ = 230223868. Its totient is φ = 229838400.

The previous prime is 230031121. The next prime is 230031169. The reversal of 230031133 is 331130032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34786404 + 195244729 = 5898^2 + 13973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230031133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230031433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94566 + ... + 96967.

It is an arithmetic number, because the mean of its divisors is an integer number (57555967).

Almost surely, 2^230031133 is an apocalyptic number.

It is an amenable number.

230031133 is a deficient number, since it is larger than the sum of its proper divisors (192735).

230031133 is a wasteful number, since it uses less digits than its factorization.

230031133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192734.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 230031133 is about 15166.7772779849. Note that the first 3 decimals coincide. The cubic root of 230031133 is about 612.7202111418.

Adding to 230031133 its reverse (331130032), we get a palindrome (561161165).

It can be divided in two parts, 2300 and 31133, that added together give a palindrome (33433).

The spelling of 230031133 in words is "two hundred thirty million, thirty-one thousand, one hundred thirty-three".