123113243011 has 16 divisors (see below), whose sum is σ = 141461769600. Its totient is φ = 105964761600.

The previous prime is 123113242997. The next prime is 123113243017. The reversal of 123113243011 is 110342311321.

It is a cyclic number.

It is not a de Polignac number, because 123113243011 - 2⁵ = 123113242979 is a prime.

It is a super-2 number, since 2×123113243011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123113243017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156451 + ... + 520291.

It is an arithmetic number, because the mean of its divisors is an integer number (8841360600).

Almost surely, 2^123113243011 is an apocalyptic number.

123113243011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123113243011 is a deficient number, since it is larger than the sum of its proper divisors (18348526589).

123113243011 is a wasteful number, since it uses less digits than its factorization.

123113243011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365490.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 123113243011 its reverse (110342311321), we get a palindrome (233455554332).

The spelling of 123113243011 in words is "one hundred twenty-three billion, one hundred thirteen million, two hundred forty-three thousand, eleven".