383201281 has 2 divisors, whose sum is σ = 383201282. Its totient is φ = 383201280.

The previous prime is 383201263. The next prime is 383201297. The reversal of 383201281 is 182102383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253446400 + 129754881 = 15920^2 + 11391^2 .

It is a cyclic number.

It is not a de Polignac number, because 383201281 - 2⁷ = 383201153 is a prime.

It is a super-2 number, since 2×383201281² = 293686443520081922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (383201081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191600640 + 191600641.

It is an arithmetic number, because the mean of its divisors is an integer number (191600641).

Almost surely, 2^383201281 is an apocalyptic number.

It is an amenable number.

383201281 is a deficient number, since it is larger than the sum of its proper divisors (1).

383201281 is an equidigital number, since it uses as much as digits as its factorization.

383201281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 383201281 is about 19575.5276046394. The cubic root of 383201281 is about 726.3439398453.

It can be divided in two parts, 38320 and 1281, that added together give a square (39601 = 199²).

The spelling of 383201281 in words is "three hundred eighty-three million, two hundred one thousand, two hundred eighty-one".