230221540 has 24 divisors (see below), whose sum is σ = 491662080. Its totient is φ = 90527328.

The previous prime is 230221507. The next prime is 230221577. The reversal of 230221540 is 45122032.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96372 + ... + 98731.

It is an arithmetic number, because the mean of its divisors is an integer number (20485920).

Almost surely, 2^230221540 is an apocalyptic number.

230221540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230221540 is an abundant number, since it is smaller than the sum of its proper divisors (261440540).

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

230221540 is a wasteful number, since it uses less digits than its factorization.

230221540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195171 (or 195169 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 230221540 is about 15173.0530876287. The cubic root of 230221540 is about 612.8892231078.

Adding to 230221540 its reverse (45122032), we get a palindrome (275343572).

The spelling of 230221540 in words is "two hundred thirty million, two hundred twenty-one thousand, five hundred forty".