123011020111131 has 12 divisors (see below), whose sum is σ = 180334563480552. Its totient is φ = 80783356490496.

The previous prime is 123011020111127. The next prime is 123011020111139. The reversal of 123011020111131 is 131111020110321.

123011020111131 is a `hidden beast` number, since 12 + 301 + 10 + 201 + 11 + 131 = 666.

It is not a de Polignac number, because 123011020111131 - 2² = 123011020111127 is a prime.

It is a super-2 number, since 2×123011020111131² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123011020111139) 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, 101999186886 + ... + 101999188091.

It is an arithmetic number, because the mean of its divisors is an integer number (15027880290046).

Almost surely, 2^{123011020111131} is an apocalyptic number.

123011020111131 is a deficient number, since it is larger than the sum of its proper divisors (57323543369421).

123011020111131 is a wasteful number, since it uses less digits than its factorization.

123011020111131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203998375050 (or 203998375047 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 123011020111131 its reverse (131111020110321), we get a palindrome (254122040221452).

The spelling of 123011020111131 in words is "one hundred twenty-three trillion, eleven billion, twenty million, one hundred eleven thousand, one hundred thirty-one".