201334381 has 2 divisors, whose sum is σ = 201334382. Its totient is φ = 201334380.

The previous prime is 201334363. The next prime is 201334447. The reversal of 201334381 is 183433102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166642281 + 34692100 = 12909^2 + 5890^2 .

It is a cyclic number.

It is not a de Polignac number, because 201334381 - 2⁷ = 201334253 is a prime.

It is a super-2 number, since 2×201334381² = 81071065945306322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201334361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100667190 + 100667191.

It is an arithmetic number, because the mean of its divisors is an integer number (100667191).

Almost surely, 2^201334381 is an apocalyptic number.

It is an amenable number.

201334381 is a deficient number, since it is larger than the sum of its proper divisors (1).

201334381 is an equidigital number, since it uses as much as digits as its factorization.

201334381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 201334381 is about 14189.2346869026. The cubic root of 201334381 is about 586.1012504286.

Adding to 201334381 its reverse (183433102), we get a palindrome (384767483).

The spelling of 201334381 in words is "two hundred one million, three hundred thirty-four thousand, three hundred eighty-one".