230820979 has 4 divisors (see below), whose sum is σ = 231440176. Its totient is φ = 230201784.

The previous prime is 230820959. The next prime is 230820991. The reversal of 230820979 is 979028032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230820979 - 2²⁷ = 96603251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230820959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309039 + ... + 309784.

It is an arithmetic number, because the mean of its divisors is an integer number (57860044).

Almost surely, 2^230820979 is an apocalyptic number.

230820979 is a deficient number, since it is larger than the sum of its proper divisors (619197).

230820979 is an equidigital number, since it uses as much as digits as its factorization.

230820979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619196.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 230820979 is about 15192.7936535714. The cubic root of 230820979 is about 613.4206985727.

The spelling of 230820979 in words is "two hundred thirty million, eight hundred twenty thousand, nine hundred seventy-nine".