11123423423 has 8 divisors (see below), whose sum is σ = 12745678848. Its totient is φ = 9509466744.

The previous prime is 11123423407. The next prime is 11123423447. The reversal of 11123423423 is 32432432111.

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 11123423423 - 2⁴ = 11123423407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11123423392 and 11123423401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123423723) 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 in 7 ways as a sum of consecutive naturals, for example, 2071811 + ... + 2077172.

It is an arithmetic number, because the mean of its divisors is an integer number (1593209856).

Almost surely, 2^11123423423 is an apocalyptic number.

11123423423 is a deficient number, since it is larger than the sum of its proper divisors (1622255425).

11123423423 is an equidigital number, since it uses as much as digits as its factorization.

11123423423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4149373.

The product of its digits is 3456, while the sum is 26.

Adding to 11123423423 its reverse (32432432111), we get a palindrome (43555855534).

The spelling of 11123423423 in words is "eleven billion, one hundred twenty-three million, four hundred twenty-three thousand, four hundred twenty-three".