1423111111 has 8 divisors (see below), whose sum is σ = 1446565680. Its totient is φ = 1399806912.

The previous prime is 1423111103. The next prime is 1423111121. The reversal of 1423111111 is 1111113241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1423111111 - 2³ = 1423111103 is a prime.

It is a Duffinian number.

1423111111 is a modest number, since divided by 111111 gives 1423 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423111121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18430 + ... + 56443.

It is an arithmetic number, because the mean of its divisors is an integer number (180820710).

Almost surely, 2^1423111111 is an apocalyptic number.

1423111111 is a deficient number, since it is larger than the sum of its proper divisors (23454569).

1423111111 is an equidigital number, since it uses as much as digits as its factorization.

1423111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75185.

The product of its digits is 24, while the sum is 16.

The square root of 1423111111 is about 37724.1449339809. The cubic root of 1423111111 is about 1124.8111250984.

Adding to 1423111111 its reverse (1111113241), we get a palindrome (2534224352).

The spelling of 1423111111 in words is "one billion, four hundred twenty-three million, one hundred eleven thousand, one hundred eleven".