521230230 has 48 divisors (see below), whose sum is σ = 1426529520. Its totient is φ = 131678784.

The previous prime is 521230223. The next prime is 521230291. The reversal of 521230230 is 32032125.

It is a super-3 number, since 3×521230230³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150697 + ... + 154116.

It is an arithmetic number, because the mean of its divisors is an integer number (29719365).

Almost surely, 2^521230230 is an apocalyptic number.

521230230 is an abundant number, since it is smaller than the sum of its proper divisors (905299290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521230230 is a wasteful number, since it uses less digits than its factorization.

521230230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304845 (or 304842 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 521230230 is about 22830.4671437095. The cubic root of 521230230 is about 804.7788083562.

Adding to 521230230 its reverse (32032125), we get a palindrome (553262355).

The spelling of 521230230 in words is "five hundred twenty-one million, two hundred thirty thousand, two hundred thirty".