4111381 has 4 divisors (see below), whose sum is σ = 4116064. Its totient is φ = 4106700.

The previous prime is 4111379. The next prime is 4111409. The reversal of 4111381 is 1831114.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1831114 = 2 ⋅915557.

It is a 3-Lehmer number, since φ(4111381) divides (4111381-1)³.

It is a cyclic number.

It is not a de Polignac number, because 4111381 - 2¹ = 4111379 is a prime.

It is a super-2 number, since 2×4111381² = 33806907454322, which contains 22 as substring.

It is a Duffinian number.

4111381 is a lucky number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4111361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585 + ... + 2926.

It is an arithmetic number, because the mean of its divisors is an integer number (1029016).

Almost surely, 2^4111381 is an apocalyptic number.

4111381 is the 1171-st octagonal number.

It is an amenable number.

4111381 is a deficient number, since it is larger than the sum of its proper divisors (4683).

4111381 is a wasteful number, since it uses less digits than its factorization.

4111381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4682.

The product of its digits is 96, while the sum is 19.

The square root of 4111381 is about 2027.6540631972. The cubic root of 4111381 is about 160.2000232751.

Adding to 4111381 its reverse (1831114), we get a palindrome (5942495).

The spelling of 4111381 in words is "four million, one hundred eleven thousand, three hundred eighty-one".