13213320031 has 4 divisors (see below), whose sum is σ = 13215941064. Its totient is φ = 13210699000.

The previous prime is 13213320017. The next prime is 13213320037. The reversal of 13213320031 is 13002331231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13213320031 - 2¹⁷ = 13213188959 is a prime.

It is a super-2 number, since 2×13213320031² (a number of 21 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 = 13213319990 and 13213320008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213320037) 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, 1302940 + ... + 1313041.

It is an arithmetic number, because the mean of its divisors is an integer number (3303985266).

Almost surely, 2^13213320031 is an apocalyptic number.

13213320031 is a deficient number, since it is larger than the sum of its proper divisors (2621033).

13213320031 is an equidigital number, since it uses as much as digits as its factorization.

13213320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621032.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13213320031 its reverse (13002331231), we get a palindrome (26215651262).

The spelling of 13213320031 in words is "thirteen billion, two hundred thirteen million, three hundred twenty thousand, thirty-one".