123444230013 has 32 divisors (see below), whose sum is σ = 201138470400. Its totient is φ = 74349379008.

The previous prime is 123444230011. The next prime is 123444230033. The reversal of 123444230013 is 310032444321.

123444230013 is a `hidden beast` number, since 1 + 2 + 344 + 4 + 2 + 300 + 13 = 666.

It is not a de Polignac number, because 123444230013 - 2¹ = 123444230011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123444230011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3724918 + ... + 3757911.

It is an arithmetic number, because the mean of its divisors is an integer number (6285577200).

Almost surely, 2^123444230013 is an apocalyptic number.

123444230013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123444230013 is a deficient number, since it is larger than the sum of its proper divisors (77694240387).

123444230013 is a wasteful number, since it uses less digits than its factorization.

123444230013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7482898 (or 7482892 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 123444230013 its reverse (310032444321), we get a palindrome (433476674334).

The spelling of 123444230013 in words is "one hundred twenty-three billion, four hundred forty-four million, two hundred thirty thousand, thirteen".