13021030423 has 4 divisors (see below), whose sum is σ = 13323845128. Its totient is φ = 12718215720.

The previous prime is 13021030361. The next prime is 13021030453. The reversal of 13021030423 is 32403012031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13021030423 is a prime.

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 13021030423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021030453) 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 3 ways as a sum of consecutive naturals, for example, 151407288 + ... + 151407373.

It is an arithmetic number, because the mean of its divisors is an integer number (3330961282).

Almost surely, 2^13021030423 is an apocalyptic number.

13021030423 is a deficient number, since it is larger than the sum of its proper divisors (302814705).

13021030423 is an equidigital number, since it uses as much as digits as its factorization.

13021030423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302814704.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13021030423 its reverse (32403012031), we get a palindrome (45424042454).

The spelling of 13021030423 in words is "thirteen billion, twenty-one million, thirty thousand, four hundred twenty-three".