3943111 has 2 divisors, whose sum is σ = 3943112. Its totient is φ = 3943110.

The previous prime is 3943109. The next prime is 3943117. The reversal of 3943111 is 1113493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3943111 - 2¹ = 3943109 is a prime.

Together with 3943109, it forms a pair of twin primes.

It is a Chen prime.

3943111 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3943117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971555 + 1971556.

It is an arithmetic number, because the mean of its divisors is an integer number (1971556).

Almost surely, 2^3943111 is an apocalyptic number.

3943111 is a deficient number, since it is larger than the sum of its proper divisors (1).

3943111 is an equidigital number, since it uses as much as digits as its factorization.

3943111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 22.

The square root of 3943111 is about 1985.7268190766. The cubic root of 3943111 is about 157.9839619463.

The spelling of 3943111 in words is "three million, nine hundred forty-three thousand, one hundred eleven".