381224111 has 16 divisors (see below), whose sum is σ = 405250560. Its totient is φ = 357997920.

The previous prime is 381224089. The next prime is 381224131. The reversal of 381224111 is 111422183.

It is a cyclic number.

It is not a de Polignac number, because 381224111 - 2⁶ = 381224047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381224131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387326 + ... + 388308.

It is an arithmetic number, because the mean of its divisors is an integer number (25328160).

Almost surely, 2^381224111 is an apocalyptic number.

381224111 is a deficient number, since it is larger than the sum of its proper divisors (24026449).

381224111 is a wasteful number, since it uses less digits than its factorization.

381224111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366.

The product of its digits is 384, while the sum is 23.

The square root of 381224111 is about 19524.9612291548. The cubic root of 381224111 is about 725.0925674909.

Adding to 381224111 its reverse (111422183), we get a palindrome (492646294).

The spelling of 381224111 in words is "three hundred eighty-one million, two hundred twenty-four thousand, one hundred eleven".