230615021 has 16 divisors (see below), whose sum is σ = 289632000. Its totient is φ = 182461104.

The previous prime is 230614999. The next prime is 230615053. The reversal of 230615021 is 120516032.

It is a de Polignac number, because none of the positive numbers 2^k-230615021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 230614984 and 230615002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230615621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21401 + ... + 30318.

It is an arithmetic number, because the mean of its divisors is an integer number (18102000).

Almost surely, 2^230615021 is an apocalyptic number.

It is an amenable number.

230615021 is a deficient number, since it is larger than the sum of its proper divisors (59016979).

230615021 is an equidigital number, since it uses as much as digits as its factorization.

230615021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51753 (or 51739 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 230615021 is about 15186.0139931451. The cubic root of 230615021 is about 613.2381956706.

It can be divided in two parts, 23061 and 5021, that added together give a palindrome (28082).

The spelling of 230615021 in words is "two hundred thirty million, six hundred fifteen thousand, twenty-one".