381444223 has 2 divisors, whose sum is σ = 381444224. Its totient is φ = 381444222.

The previous prime is 381444191. The next prime is 381444227. The reversal of 381444223 is 322444183.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381444223 - 2⁵ = 381444191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381444227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190722111 + 190722112.

It is an arithmetic number, because the mean of its divisors is an integer number (190722112).

Almost surely, 2^381444223 is an apocalyptic number.

381444223 is a deficient number, since it is larger than the sum of its proper divisors (1).

381444223 is an equidigital number, since it uses as much as digits as its factorization.

381444223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 31.

The square root of 381444223 is about 19530.5970978872. The cubic root of 381444223 is about 725.2320924784.

The spelling of 381444223 in words is "three hundred eighty-one million, four hundred forty-four thousand, two hundred twenty-three".