230040521 has 2 divisors, whose sum is σ = 230040522. Its totient is φ = 230040520.

The previous prime is 230040487. The next prime is 230040523. The reversal of 230040521 is 125040032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130759225 + 99281296 = 11435^2 + 9964^2 .

It is a cyclic number.

It is not a de Polignac number, because 230040521 - 2¹⁰ = 230039497 is a prime.

Together with 230040523, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230040521.

It is not a weakly prime, because it can be changed into another prime (230040523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115020260 + 115020261.

It is an arithmetic number, because the mean of its divisors is an integer number (115020261).

Almost surely, 2^230040521 is an apocalyptic number.

It is an amenable number.

230040521 is a deficient number, since it is larger than the sum of its proper divisors (1).

230040521 is an equidigital number, since it uses as much as digits as its factorization.

230040521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 230040521 is about 15167.0867670756. The cubic root of 230040521 is about 612.7285464470.

Adding to 230040521 its reverse (125040032), we get a palindrome (355080553).

The spelling of 230040521 in words is "two hundred thirty million, forty thousand, five hundred twenty-one".