230223501521 has 8 divisors (see below), whose sum is σ = 262517296104. Its totient is φ = 200013177600.

The previous prime is 230223501493. The next prime is 230223501523. The reversal of 230223501521 is 125105322032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32216301121 + 198007200400 = 179489^2 + 444980^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230223501521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230223501523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520867430 + ... + 520867871.

It is an arithmetic number, because the mean of its divisors is an integer number (32814662013).

Almost surely, 2^230223501521 is an apocalyptic number.

It is an amenable number.

230223501521 is a deficient number, since it is larger than the sum of its proper divisors (32293794583).

230223501521 is a wasteful number, since it uses less digits than its factorization.

230223501521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041735331.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 230223501521 its reverse (125105322032), we get a palindrome (355328823553).

The spelling of 230223501521 in words is "two hundred thirty billion, two hundred twenty-three million, five hundred one thousand, five hundred twenty-one".