13131123103 has 16 divisors (see below), whose sum is σ = 15419590144. Its totient is φ = 10946080800.

The previous prime is 13131123023. The next prime is 13131123157. The reversal of 13131123103 is 30132113131.

It is a cyclic number.

It is not a de Polignac number, because 13131123103 - 2⁹ = 13131122591 is a prime.

It is a super-2 number, since 2×13131123103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131123163) 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, 628678 + ... + 649228.

It is an arithmetic number, because the mean of its divisors is an integer number (963724384).

Almost surely, 2^13131123103 is an apocalyptic number.

13131123103 is a deficient number, since it is larger than the sum of its proper divisors (2288467041).

13131123103 is a wasteful number, since it uses less digits than its factorization.

13131123103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23062.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13131123103 its reverse (30132113131), we get a palindrome (43263236234).

The spelling of 13131123103 in words is "thirteen billion, one hundred thirty-one million, one hundred twenty-three thousand, one hundred three".