381120203 has 2 divisors, whose sum is σ = 381120204. Its totient is φ = 381120202.

The previous prime is 381120149. The next prime is 381120217. The reversal of 381120203 is 302021183.

It is a strong prime.

It is an emirp because it is prime and its reverse (302021183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381120203 - 2⁶ = 381120139 is a prime.

It is a super-2 number, since 2×381120203² = 290505218269522418, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381123203) 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, 190560101 + 190560102.

It is an arithmetic number, because the mean of its divisors is an integer number (190560102).

Almost surely, 2^381120203 is an apocalyptic number.

381120203 is a deficient number, since it is larger than the sum of its proper divisors (1).

381120203 is an equidigital number, since it uses as much as digits as its factorization.

381120203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 381120203 is about 19522.3001462430. The cubic root of 381120203 is about 725.0266834412.

Adding to 381120203 its reverse (302021183), we get a palindrome (683141386).

The spelling of 381120203 in words is "three hundred eighty-one million, one hundred twenty thousand, two hundred three".