380217281 has 2 divisors, whose sum is σ = 380217282. Its totient is φ = 380217280.

The previous prime is 380217203. The next prime is 380217317. The reversal of 380217281 is 182712083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305550400 + 74666881 = 17480^2 + 8641^2 .

It is an emirp because it is prime and its reverse (182712083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380217281 - 2¹⁸ = 379955137 is a prime.

It is a super-2 number, since 2×380217281² = 289130361542065922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (380217581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190108640 + 190108641.

It is an arithmetic number, because the mean of its divisors is an integer number (190108641).

Almost surely, 2^380217281 is an apocalyptic number.

It is an amenable number.

380217281 is a deficient number, since it is larger than the sum of its proper divisors (1).

380217281 is an equidigital number, since it uses as much as digits as its factorization.

380217281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 380217281 is about 19499.1610332342. The cubic root of 380217281 is about 724.4536706958.

The spelling of 380217281 in words is "three hundred eighty million, two hundred seventeen thousand, two hundred eighty-one".