230521533 has 16 divisors (see below), whose sum is σ = 336000000. Its totient is φ = 139420080.

The previous prime is 230521531. The next prime is 230521541. The reversal of 230521533 is 335125032.

It is a happy number.

It is not a de Polignac number, because 230521533 - 2¹ = 230521531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230521531) 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, 9468 + ... + 23466.

It is an arithmetic number, because the mean of its divisors is an integer number (21000000).

Almost surely, 2^230521533 is an apocalyptic number.

It is an amenable number.

230521533 is a deficient number, since it is larger than the sum of its proper divisors (105478467).

230521533 is a wasteful number, since it uses less digits than its factorization.

230521533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14512.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 230521533 is about 15182.9355857160. The cubic root of 230521533 is about 613.1553185002.

Adding to 230521533 its reverse (335125032), we get a palindrome (565646565).

The spelling of 230521533 in words is "two hundred thirty million, five hundred twenty-one thousand, five hundred thirty-three".