8112381 has 4 divisors (see below), whose sum is σ = 10816512. Its totient is φ = 5408252.

The previous prime is 8112371. The next prime is 8112397. The reversal of 8112381 is 1832118.

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 8112381 - 2¹⁹ = 7588093 is a prime.

It is a super-2 number, since 2×8112381² = 131621450978322, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8112331) 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, 1352061 + ... + 1352066.

It is an arithmetic number, because the mean of its divisors is an integer number (2704128).

Almost surely, 2^8112381 is an apocalyptic number.

It is an amenable number.

8112381 is a deficient number, since it is larger than the sum of its proper divisors (2704131).

8112381 is a wasteful number, since it uses less digits than its factorization.

8112381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704130.

The product of its digits is 384, while the sum is 24.

The square root of 8112381 is about 2848.2241835923. The cubic root of 8112381 is about 200.9321570002.

Adding to 8112381 its reverse (1832118), we get a palindrome (9944499).

The spelling of 8112381 in words is "eight million, one hundred twelve thousand, three hundred eighty-one".