123434111 has 2 divisors, whose sum is σ = 123434112. Its totient is φ = 123434110.

The previous prime is 123434083. The next prime is 123434119. The reversal of 123434111 is 111434321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123434111 - 2¹⁰ = 123433087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123434119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61717055 + 61717056.

It is an arithmetic number, because the mean of its divisors is an integer number (61717056).

Almost surely, 2^123434111 is an apocalyptic number.

123434111 is a deficient number, since it is larger than the sum of its proper divisors (1).

123434111 is an equidigital number, since it uses as much as digits as its factorization.

123434111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 123434111 is about 11110.0905036818. The cubic root of 123434111 is about 497.9033685619.

Adding to 123434111 its reverse (111434321), we get a palindrome (234868432).

The spelling of 123434111 in words is "one hundred twenty-three million, four hundred thirty-four thousand, one hundred eleven".