13013023421 has 8 divisors (see below), whose sum is σ = 13808957760. Its totient is φ = 12236268352.

The previous prime is 13013023403. The next prime is 13013023423. The reversal of 13013023421 is 12432031031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13013023421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13013023393 and 13013023402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013023423) 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, 4793420 + ... + 4796133.

It is an arithmetic number, because the mean of its divisors is an integer number (1726119720).

Almost surely, 2^13013023421 is an apocalyptic number.

It is an amenable number.

13013023421 is a deficient number, since it is larger than the sum of its proper divisors (795934339).

13013023421 is an equidigital number, since it uses as much as digits as its factorization.

13013023421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9589635.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13013023421 its reverse (12432031031), we get a palindrome (25445054452).

The spelling of 13013023421 in words is "thirteen billion, thirteen million, twenty-three thousand, four hundred twenty-one".