230909815 has 4 divisors (see below), whose sum is σ = 277091784. Its totient is φ = 184727848.

The previous prime is 230909797. The next prime is 230909837. The reversal of 230909815 is 518909032.

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 230909815 - 2¹⁵ = 230877047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23090977 + ... + 23090986.

It is an arithmetic number, because the mean of its divisors is an integer number (69272946).

Almost surely, 2^230909815 is an apocalyptic number.

230909815 is a deficient number, since it is larger than the sum of its proper divisors (46181969).

230909815 is an equidigital number, since it uses as much as digits as its factorization.

230909815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46181968.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 230909815 is about 15195.7169952589. The cubic root of 230909815 is about 613.4993841583.

The spelling of 230909815 in words is "two hundred thirty million, nine hundred nine thousand, eight hundred fifteen".