342811111 has 2 divisors, whose sum is σ = 342811112. Its totient is φ = 342811110.

The previous prime is 342811081. The next prime is 342811123. The reversal of 342811111 is 111118243.

It is a strong prime.

It is an emirp because it is prime and its reverse (111118243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342811111 - 2⁷ = 342810983 is a prime.

342811111 is a modest number, since divided by 11111 gives 3428 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342811211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171405555 + 171405556.

It is an arithmetic number, because the mean of its divisors is an integer number (171405556).

Almost surely, 2^342811111 is an apocalyptic number.

342811111 is a deficient number, since it is larger than the sum of its proper divisors (1).

342811111 is an equidigital number, since it uses as much as digits as its factorization.

342811111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 22.

The square root of 342811111 is about 18515.1589515186. The cubic root of 342811111 is about 699.8714804870.

Adding to 342811111 its reverse (111118243), we get a palindrome (453929354).

The spelling of 342811111 in words is "three hundred forty-two million, eight hundred eleven thousand, one hundred eleven".