230403521 has 8 divisors (see below), whose sum is σ = 238535400. Its totient is φ = 222284160.

The previous prime is 230403487. The next prime is 230403529. The reversal of 230403521 is 125304032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 78127921 + 152275600 = 8839^2 + 12340^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230403521 - 2⁶ = 230403457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230403493 and 230403502.

It is not an unprimeable number, because it can be changed into a prime (230403529) 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 7 ways as a sum of consecutive naturals, for example, 49661 + ... + 54101.

It is an arithmetic number, because the mean of its divisors is an integer number (29816925).

Almost surely, 2^230403521 is an apocalyptic number.

It is an amenable number.

230403521 is a deficient number, since it is larger than the sum of its proper divisors (8131879).

230403521 is a wasteful number, since it uses less digits than its factorization.

230403521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6259.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 230403521 is about 15179.0487514864. The cubic root of 230403521 is about 613.0506687873.

Adding to 230403521 its reverse (125304032), we get a palindrome (355707553).

The spelling of 230403521 in words is "two hundred thirty million, four hundred three thousand, five hundred twenty-one".