13231133021 has 4 divisors (see below), whose sum is σ = 13255322112. Its totient is φ = 13206943932.

The previous prime is 13231133011. The next prime is 13231133023. The reversal of 13231133021 is 12033113231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13231133021 - 2¹⁴ = 13231116637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13231132984 and 13231133002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231133023) 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, 12093725 + ... + 12094818.

It is an arithmetic number, because the mean of its divisors is an integer number (3313830528).

Almost surely, 2^13231133021 is an apocalyptic number.

It is an amenable number.

13231133021 is a deficient number, since it is larger than the sum of its proper divisors (24189091).

13231133021 is an equidigital number, since it uses as much as digits as its factorization.

13231133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24189090.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13231133021 its reverse (12033113231), we get a palindrome (25264246252).

The spelling of 13231133021 in words is "thirteen billion, two hundred thirty-one million, one hundred thirty-three thousand, twenty-one".