230778239 has 4 divisors (see below), whose sum is σ = 230956656. Its totient is φ = 230599824.

The previous prime is 230778209. The next prime is 230778241. The reversal of 230778239 is 932877032.

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 230778239 - 2²⁴ = 214001023 is a prime.

It is a super-3 number, since 3×230778239³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230778196 and 230778205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230778209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87254 + ... + 89859.

It is an arithmetic number, because the mean of its divisors is an integer number (57739164).

Almost surely, 2^230778239 is an apocalyptic number.

230778239 is a deficient number, since it is larger than the sum of its proper divisors (178417).

230778239 is a wasteful number, since it uses less digits than its factorization.

230778239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178416.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 230778239 is about 15191.3870005342. The cubic root of 230778239 is about 613.3828348581.

The spelling of 230778239 in words is "two hundred thirty million, seven hundred seventy-eight thousand, two hundred thirty-nine".