230321021 has 12 divisors (see below), whose sum is σ = 282026880. Its totient is φ = 187026840.

The previous prime is 230321017. The next prime is 230321023. The reversal of 230321021 is 120123032.

It is a happy number.

It is not a de Polignac number, because 230321021 - 2² = 230321017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 230320987 and 230321005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230321023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122765 + ... + 124626.

It is an arithmetic number, because the mean of its divisors is an integer number (23502240).

Almost surely, 2^230321021 is an apocalyptic number.

It is an amenable number.

230321021 is a deficient number, since it is larger than the sum of its proper divisors (51705859).

230321021 is a wasteful number, since it uses less digits than its factorization.

230321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247424 (or 247417 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 230321021 is about 15176.3309465760. The cubic root of 230321021 is about 612.9774888900.

Adding to 230321021 its reverse (120123032), we get a palindrome (350444053).

The spelling of 230321021 in words is "two hundred thirty million, three hundred twenty-one thousand, twenty-one".