13021040323 has 4 divisors (see below), whose sum is σ = 13025426008. Its totient is φ = 13016654640.

The previous prime is 13021040321. The next prime is 13021040327. The reversal of 13021040323 is 32304012031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32304012031 = 157253 ⋅205427.

It is a cyclic number.

It is not a de Polignac number, because 13021040323 - 2¹ = 13021040321 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 13021040323.

It is not an unprimeable number, because it can be changed into a prime (13021040321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2188386 + ... + 2194327.

It is an arithmetic number, because the mean of its divisors is an integer number (3256356502).

Almost surely, 2^13021040323 is an apocalyptic number.

13021040323 is a deficient number, since it is larger than the sum of its proper divisors (4385685).

13021040323 is an equidigital number, since it uses as much as digits as its factorization.

13021040323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385684.

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

Adding to 13021040323 its reverse (32304012031), we get a palindrome (45325052354).

The spelling of 13021040323 in words is "thirteen billion, twenty-one million, forty thousand, three hundred twenty-three".