123130320111 has 12 divisors (see below), whose sum is σ = 181210660488. Its totient is φ = 80538070704.

The previous prime is 123130320109. The next prime is 123130320143. The reversal of 123130320111 is 111023031321.

123130320111 is a `hidden beast` number, since 1 + 231 + 3 + 0 + 320 + 111 = 666.

It is not a de Polignac number, because 123130320111 - 2¹ = 123130320109 is a prime.

It is a super-2 number, since 2×123130320111² (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 (123130320101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129066945 + ... + 129067898.

It is an arithmetic number, because the mean of its divisors is an integer number (15100888374).

Almost surely, 2^123130320111 is an apocalyptic number.

123130320111 is a deficient number, since it is larger than the sum of its proper divisors (58080340377).

123130320111 is a wasteful number, since it uses less digits than its factorization.

123130320111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258134902 (or 258134899 counting only the distinct ones).

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

Adding to 123130320111 its reverse (111023031321), we get a palindrome (234153351432).

The spelling of 123130320111 in words is "one hundred twenty-three billion, one hundred thirty million, three hundred twenty thousand, one hundred eleven".