13213000011031 has 4 divisors (see below), whose sum is σ = 13213043235952. Its totient is φ = 13212956786112.

The previous prime is 13213000011019. The next prime is 13213000011083. The reversal of 13213000011031 is 13011000031231.

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-13213000011031 is a prime.

It is a super-2 number, since 2×13213000011031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13213000010996 and 13213000011014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213000011931) 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, 21150651 + ... + 21766396.

It is an arithmetic number, because the mean of its divisors is an integer number (3303260808988).

Almost surely, 2^{13213000011031} is an apocalyptic number.

13213000011031 is a deficient number, since it is larger than the sum of its proper divisors (43224921).

13213000011031 is an equidigital number, since it uses as much as digits as its factorization.

13213000011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43224920.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 13213000011031 its reverse (13011000031231), we get a palindrome (26224000042262).

The spelling of 13213000011031 in words is "thirteen trillion, two hundred thirteen billion, eleven thousand, thirty-one".