230345521 has 24 divisors (see below), whose sum is σ = 279092520. Its totient is φ = 189326592.

The previous prime is 230345471. The next prime is 230345527. The reversal of 230345521 is 125543032.

It can be written as a sum of positive squares in 4 ways, for example, as 29811600 + 200533921 = 5460^2 + 14161^2 .

It is not a de Polignac number, because 230345521 - 2¹¹ = 230343473 is a prime.

It is a super-2 number, since 2×230345521² = 106118118089522882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (230345527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245365 + ... + 246301.

It is an arithmetic number, because the mean of its divisors is an integer number (11628855).

Almost surely, 2^230345521 is an apocalyptic number.

It is an amenable number.

230345521 is a deficient number, since it is larger than the sum of its proper divisors (48746999).

230345521 is a wasteful number, since it uses less digits than its factorization.

230345521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 230345521 is about 15177.1381030812. The cubic root of 230345521 is about 612.9992229259. Note that the first 3 decimals are identical.

Adding to 230345521 its reverse (125543032), we get a palindrome (355888553).

The spelling of 230345521 in words is "two hundred thirty million, three hundred forty-five thousand, five hundred twenty-one".