230312521 has 2 divisors, whose sum is σ = 230312522. Its totient is φ = 230312520.

The previous prime is 230312491. The next prime is 230312543. The reversal of 230312521 is 125213032.

230312521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159668496 + 70644025 = 12636^2 + 8405^2 .

It is a cyclic number.

It is not a de Polignac number, because 230312521 - 2¹⁹ = 229788233 is a prime.

It is not a weakly prime, because it can be changed into another prime (230312561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115156260 + 115156261.

It is an arithmetic number, because the mean of its divisors is an integer number (115156261).

Almost surely, 2^230312521 is an apocalyptic number.

It is an amenable number.

230312521 is a deficient number, since it is larger than the sum of its proper divisors (1).

230312521 is an equidigital number, since it uses as much as digits as its factorization.

230312521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 230312521 is about 15176.0509026558. The cubic root of 230312521 is about 612.9699481501.

Adding to 230312521 its reverse (125213032), we get a palindrome (355525553).

It can be divided in two parts, 23031 and 2521, that added together give a palindrome (25552).

The spelling of 230312521 in words is "two hundred thirty million, three hundred twelve thousand, five hundred twenty-one".