230233521 has 16 divisors (see below), whose sum is σ = 351820800. Its totient is φ = 131191248.

The previous prime is 230233489. The next prime is 230233541. The reversal of 230233521 is 125332032.

It is not a de Polignac number, because 230233521 - 2⁵ = 230233489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (230233541) 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, 7731 + ... + 22808.

It is an arithmetic number, because the mean of its divisors is an integer number (21988800).

Almost surely, 2^230233521 is an apocalyptic number.

230233521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

230233521 is a deficient number, since it is larger than the sum of its proper divisors (121587279).

230233521 is a wasteful number, since it uses less digits than its factorization.

230233521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30908.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 230233521 is about 15173.4478942658. The cubic root of 230233521 is about 612.8998547490.

Adding to 230233521 its reverse (125332032), we get a palindrome (355565553).

The spelling of 230233521 in words is "two hundred thirty million, two hundred thirty-three thousand, five hundred twenty-one".