381443 has 2 divisors, whose sum is σ = 381444. Its totient is φ = 381442.

The previous prime is 381439. The next prime is 381461. The reversal of 381443 is 344183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381443 - 2² = 381439 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190721 + 190722.

It is an arithmetic number, because the mean of its divisors is an integer number (190722).

2³⁸¹⁴⁴³ is an apocalyptic number.

381443 is a deficient number, since it is larger than the sum of its proper divisors (1).

381443 is an equidigital number, since it uses as much as digits as its factorization.

381443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 381443 is about 617.6107188189. The cubic root of 381443 is about 72.5231317389.

The spelling of 381443 in words is "three hundred eighty-one thousand, four hundred forty-three".