230221312 has 40 divisors (see below), whose sum is σ = 470735496. Its totient is φ = 112422912.

The previous prime is 230221301. The next prime is 230221331. The reversal of 230221312 is 213122032.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16788 + ... + 27244.

Almost surely, 2^230221312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235367748).

230221312 is an abundant number, since it is smaller than the sum of its proper divisors (240514184).

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

230221312 is an equidigital number, since it uses as much as digits as its factorization.

230221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10518 (or 10502 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 230221312 is about 15173.0455743071. The cubic root of 230221312 is about 612.8890207827.

Adding to 230221312 its reverse (213122032), we get a palindrome (443343344).

The spelling of 230221312 in words is "two hundred thirty million, two hundred twenty-one thousand, three hundred twelve".