230479721 has 4 divisors (see below), whose sum is σ = 230860032. Its totient is φ = 230099412.

The previous prime is 230479679. The next prime is 230479723. The reversal of 230479721 is 127974032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230479721 - 2⁶ = 230479657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230479723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189245 + ... + 190458.

It is an arithmetic number, because the mean of its divisors is an integer number (57715008).

Almost surely, 2^230479721 is an apocalyptic number.

It is an amenable number.

230479721 is a deficient number, since it is larger than the sum of its proper divisors (380311).

230479721 is an equidigital number, since it uses as much as digits as its factorization.

230479721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380310.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 230479721 is about 15181.5585827016. The cubic root of 230479721 is about 613.1182448842.

It can be divided in two parts, 23047 and 9721, that added together give a 15-th power (32768 = 2¹⁵).

The spelling of 230479721 in words is "two hundred thirty million, four hundred seventy-nine thousand, seven hundred twenty-one".