230161521 has 8 divisors (see below), whose sum is σ = 324933984. Its totient is φ = 144415040.

The previous prime is 230161517. The next prime is 230161531. The reversal of 230161521 is 125161032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230161521 - 2² = 230161517 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (230161501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2256435 + ... + 2256536.

It is an arithmetic number, because the mean of its divisors is an integer number (40616748).

Almost surely, 2^230161521 is an apocalyptic number.

It is an amenable number.

230161521 is a deficient number, since it is larger than the sum of its proper divisors (94772463).

230161521 is a wasteful number, since it uses less digits than its factorization.

230161521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512991.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 230161521 is about 15171.0751431795. The cubic root of 230161521 is about 612.8359581884.

The spelling of 230161521 in words is "two hundred thirty million, one hundred sixty-one thousand, five hundred twenty-one".