123131011103 has 8 divisors (see below), whose sum is σ = 124885284480. Its totient is φ = 121377294360.

The previous prime is 123131011097. The next prime is 123131011111. The reversal of 123131011103 is 301110131321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123131011103 - 2¹² = 123131007007 is a prime.

It is a super-2 number, since 2×123131011103² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123131011403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316976 + ... + 588842.

It is an arithmetic number, because the mean of its divisors is an integer number (15610660560).

Almost surely, 2^123131011103 is an apocalyptic number.

123131011103 is a deficient number, since it is larger than the sum of its proper divisors (1754273377).

123131011103 is an equidigital number, since it uses as much as digits as its factorization.

123131011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278317.

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

Adding to 123131011103 its reverse (301110131321), we get a palindrome (424241142424).

The spelling of 123131011103 in words is "one hundred twenty-three billion, one hundred thirty-one million, eleven thousand, one hundred three".