13021320231213 has 8 divisors (see below), whose sum is σ = 19842011780928. Its totient is φ = 7440754417824.

The previous prime is 13021320231209. The next prime is 13021320231341. The reversal of 13021320231213 is 31213202312031.

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

It is not a de Polignac number, because 13021320231213 - 2² = 13021320231209 is a prime.

It is a super-4 number, since 4×13021320231213⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021320231613) 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, 310031434056 + ... + 310031434097.

It is an arithmetic number, because the mean of its divisors is an integer number (2480251472616).

Almost surely, 2^{13021320231213} is an apocalyptic number.

It is an amenable number.

13021320231213 is a deficient number, since it is larger than the sum of its proper divisors (6820691549715).

13021320231213 is an equidigital number, since it uses as much as digits as its factorization.

13021320231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620062868163.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 13021320231213 its reverse (31213202312031), we get a palindrome (44234522543244).

The spelling of 13021320231213 in words is "thirteen trillion, twenty-one billion, three hundred twenty million, two hundred thirty-one thousand, two hundred thirteen".