123444231105 has 64 divisors (see below), whose sum is σ = 229360078080. Its totient is φ = 56169676800.

The previous prime is 123444231091. The next prime is 123444231133. The reversal of 123444231105 is 501132444321.

It is not a de Polignac number, because 123444231105 - 2⁴ = 123444231089 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 254416 + ... + 558225.

It is an arithmetic number, because the mean of its divisors is an integer number (3583751220).

Almost surely, 2^123444231105 is an apocalyptic number.

123444231105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123444231105 is a deficient number, since it is larger than the sum of its proper divisors (105915846975).

123444231105 is a wasteful number, since it uses less digits than its factorization.

123444231105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812722.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 123444231105 its reverse (501132444321), we get a palindrome (624576675426).

The spelling of 123444231105 in words is "one hundred twenty-three billion, four hundred forty-four million, two hundred thirty-one thousand, one hundred five".