13103121423 has 16 divisors (see below), whose sum is σ = 20012157440. Its totient is φ = 7470436896.

The previous prime is 13103121419. The next prime is 13103121469. The reversal of 13103121423 is 32412130131.

It is not a de Polignac number, because 13103121423 - 2² = 13103121419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13103121423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103121403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 701440 + ... + 719877.

It is an arithmetic number, because the mean of its divisors is an integer number (1250759840).

Almost surely, 2^13103121423 is an apocalyptic number.

13103121423 is a deficient number, since it is larger than the sum of its proper divisors (6909036017).

13103121423 is a wasteful number, since it uses less digits than its factorization.

13103121423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421766.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13103121423 its reverse (32412130131), we get a palindrome (45515251554).

The spelling of 13103121423 in words is "thirteen billion, one hundred three million, one hundred twenty-one thousand, four hundred twenty-three".