381101 has 4 divisors (see below), whose sum is σ = 435552. Its totient is φ = 326652.

The previous prime is 381097. The next prime is 381103. The reversal of 381101 is 101183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 381101 - 2² = 381097 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 (381103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27215 + ... + 27228.

It is an arithmetic number, because the mean of its divisors is an integer number (108888).

2³⁸¹¹⁰¹ is an apocalyptic number.

It is an amenable number.

381101 is a deficient number, since it is larger than the sum of its proper divisors (54451).

381101 is an equidigital number, since it uses as much as digits as its factorization.

381101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54450.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 381101 is about 617.3337832972. Note that the first 3 decimals coincide. The cubic root of 381101 is about 72.5014506250.

Adding to 381101 its reverse (101183), we get a palindrome (482284).

The spelling of 381101 in words is "three hundred eighty-one thousand, one hundred one".