423112111 has 2 divisors, whose sum is σ = 423112112. Its totient is φ = 423112110.

The previous prime is 423112093. The next prime is 423112199. The reversal of 423112111 is 111211324.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423112111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423112411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211556055 + 211556056.

It is an arithmetic number, because the mean of its divisors is an integer number (211556056).

Almost surely, 2^423112111 is an apocalyptic number.

423112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

423112111 is an equidigital number, since it uses as much as digits as its factorization.

423112111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 16.

The square root of 423112111 is about 20569.6891323131. The cubic root of 423112111 is about 750.7323873936.

Adding to 423112111 its reverse (111211324), we get a palindrome (534323435).

The spelling of 423112111 in words is "four hundred twenty-three million, one hundred twelve thousand, one hundred eleven".