123244130013 has 4 divisors (see below), whose sum is σ = 164325506688. Its totient is φ = 82162753340.

The previous prime is 123244129961. The next prime is 123244130027. The reversal of 123244130013 is 310031442321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123244130013 - 2¹⁰ = 123244128989 is a prime.

It is a super-2 number, since 2×123244130013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123244130413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20540688333 + ... + 20540688338.

It is an arithmetic number, because the mean of its divisors is an integer number (41081376672).

Almost surely, 2^123244130013 is an apocalyptic number.

It is an amenable number.

123244130013 is a deficient number, since it is larger than the sum of its proper divisors (41081376675).

123244130013 is an equidigital number, since it uses as much as digits as its factorization.

123244130013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41081376674.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 123244130013 its reverse (310031442321), we get a palindrome (433275572334).

The spelling of 123244130013 in words is "one hundred twenty-three billion, two hundred forty-four million, one hundred thirty thousand, thirteen".