230203517 has 2 divisors, whose sum is σ = 230203518. Its totient is φ = 230203516.

The previous prime is 230203471. The next prime is 230203559. The reversal of 230203517 is 715302032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227828836 + 2374681 = 15094^2 + 1541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230203517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 230203492 and 230203501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230203717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115101758 + 115101759.

It is an arithmetic number, because the mean of its divisors is an integer number (115101759).

Almost surely, 2^230203517 is an apocalyptic number.

It is an amenable number.

230203517 is a deficient number, since it is larger than the sum of its proper divisors (1).

230203517 is an equidigital number, since it uses as much as digits as its factorization.

230203517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 230203517 is about 15172.4591612566. The cubic root of 230203517 is about 612.8732292515.

Adding to 230203517 its reverse (715302032), we get a palindrome (945505549).

The spelling of 230203517 in words is "two hundred thirty million, two hundred three thousand, five hundred seventeen".