383820111 has 12 divisors (see below), whose sum is σ = 554696688. Its totient is φ = 255746304.

The previous prime is 383820109. The next prime is 383820131. The reversal of 383820111 is 111028383.

It is not a de Polignac number, because 383820111 - 2¹ = 383820109 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383820131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8926 + ... + 29108.

It is an arithmetic number, because the mean of its divisors is an integer number (46224724).

Almost surely, 2^383820111 is an apocalyptic number.

383820111 is a deficient number, since it is larger than the sum of its proper divisors (170876577).

383820111 is a wasteful number, since it uses less digits than its factorization.

383820111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22302 (or 22299 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 383820111 is about 19591.3274435399. The cubic root of 383820111 is about 726.7347194026.

Adding to 383820111 its reverse (111028383), we get a palindrome (494848494).

The spelling of 383820111 in words is "three hundred eighty-three million, eight hundred twenty thousand, one hundred eleven".