381113 has 4 divisors (see below), whose sum is σ = 385140. Its totient is φ = 377088.

The previous prime is 381103. The next prime is 381167. The reversal of 381113 is 311183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107584 + 273529 = 328^2 + 523^2 .

It is a cyclic number.

It is not a de Polignac number, because 381113 - 2⁴ = 381097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 381091 and 381100.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381113.

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, 1868 + ... + 2061.

It is an arithmetic number, because the mean of its divisors is an integer number (96285).

2³⁸¹¹¹³ is an apocalyptic number.

It is an amenable number.

381113 is a deficient number, since it is larger than the sum of its proper divisors (4027).

381113 is an equidigital number, since it uses as much as digits as its factorization.

381113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4026.

The product of its digits is 72, while the sum is 17.

The square root of 381113 is about 617.3435024360. The cubic root of 381113 is about 72.5022115853.

Adding to 381113 its reverse (311183), we get a palindrome (692296).

It can be divided in two parts, 381 and 113, that added together give a palindrome (494).

The spelling of 381113 in words is "three hundred eighty-one thousand, one hundred thirteen".