230121317 has 2 divisors, whose sum is σ = 230121318. Its totient is φ = 230121316.

The previous prime is 230121289. The next prime is 230121323. The reversal of 230121317 is 713121032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229552801 + 568516 = 15151^2 + 754^2 .

It is a cyclic number.

It is not a de Polignac number, because 230121317 - 2¹⁴ = 230104933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230121347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115060658 + 115060659.

It is an arithmetic number, because the mean of its divisors is an integer number (115060659).

Almost surely, 2^230121317 is an apocalyptic number.

It is an amenable number.

230121317 is a deficient number, since it is larger than the sum of its proper divisors (1).

230121317 is an equidigital number, since it uses as much as digits as its factorization.

230121317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 230121317 is about 15169.7500638606. The cubic root of 230121317 is about 612.8002732608.

Adding to 230121317 its reverse (713121032), we get a palindrome (943242349).

The spelling of 230121317 in words is "two hundred thirty million, one hundred twenty-one thousand, three hundred seventeen".