123132131111 has 16 divisors (see below), whose sum is σ = 136900605600. Its totient is φ = 109813104000.

The previous prime is 123132131081. The next prime is 123132131113. The reversal of 123132131111 is 111131231321.

It is a cyclic number.

It is not a de Polignac number, because 123132131111 - 2⁶ = 123132131047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123132131113) 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 15 ways as a sum of consecutive naturals, for example, 387296 + ... + 629493.

It is an arithmetic number, because the mean of its divisors is an integer number (8556287850).

Almost surely, 2^123132131111 is an apocalyptic number.

123132131111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123132131111 is a deficient number, since it is larger than the sum of its proper divisors (13768474489).

123132131111 is a wasteful number, since it uses less digits than its factorization.

123132131111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017010.

The product of its digits is 108, while the sum is 20.

Adding to 123132131111 its reverse (111131231321), we get a palindrome (234263362432).

The spelling of 123132131111 in words is "one hundred twenty-three billion, one hundred thirty-two million, one hundred thirty-one thousand, one hundred eleven".