123011031113 has 16 divisors (see below), whose sum is σ = 126417853440. Its totient is φ = 119654046336.

The previous prime is 123011031083. The next prime is 123011031127. The reversal of 123011031113 is 311130110321.

It is a cyclic number.

It is not a de Polignac number, because 123011031113 - 2⁶ = 123011031049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123011031091 and 123011031100.

It is not an unprimeable number, because it can be changed into a prime (123011031413) 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, 4596056 + ... + 4622742.

It is an arithmetic number, because the mean of its divisors is an integer number (7901115840).

Almost surely, 2^123011031113 is an apocalyptic number.

It is an amenable number.

123011031113 is a deficient number, since it is larger than the sum of its proper divisors (3406822327).

123011031113 is an equidigital number, since it uses as much as digits as its factorization.

123011031113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27616.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 123011031113 its reverse (311130110321), we get a palindrome (434141141434).

The spelling of 123011031113 in words is "one hundred twenty-three billion, eleven million, thirty-one thousand, one hundred thirteen".