230261521 has 16 divisors (see below), whose sum is σ = 276784128. Its totient is φ = 187387200.

The previous prime is 230261489. The next prime is 230261567. The reversal of 230261521 is 125162032.

It is not a de Polignac number, because 230261521 - 2⁵ = 230261489 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 230261492 and 230261501.

It is not an unprimeable number, because it can be changed into a prime (230261321) 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 15 ways as a sum of consecutive naturals, for example, 1491 + ... + 21511.

It is an arithmetic number, because the mean of its divisors is an integer number (17299008).

Almost surely, 2^230261521 is an apocalyptic number.

It is an amenable number.

230261521 is a deficient number, since it is larger than the sum of its proper divisors (46522607).

230261521 is a wasteful number, since it uses less digits than its factorization.

230261521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20112.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 230261521 is about 15174.3705306019. The cubic root of 230261521 is about 612.9246998139.

The spelling of 230261521 in words is "two hundred thirty million, two hundred sixty-one thousand, five hundred twenty-one".