123320131011 has 24 divisors (see below), whose sum is σ = 222083007744. Its totient is φ = 64062405360.

The previous prime is 123320131007. The next prime is 123320131027. The reversal of 123320131011 is 110131023321.

123320131011 is a `hidden beast` number, since 1 + 23 + 320 + 1 + 310 + 11 = 666.

It is not a de Polignac number, because 123320131011 - 2² = 123320131007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123320133011) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 88974871 + ... + 88976256.

It is an arithmetic number, because the mean of its divisors is an integer number (9253458656).

Almost surely, 2^123320131011 is an apocalyptic number.

123320131011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123320131011 is a deficient number, since it is larger than the sum of its proper divisors (98762876733).

123320131011 is a wasteful number, since it uses less digits than its factorization.

123320131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177951151 (or 177951148 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 123320131011 its reverse (110131023321), we get a palindrome (233451154332).

The spelling of 123320131011 in words is "one hundred twenty-three billion, three hundred twenty million, one hundred thirty-one thousand, eleven".