13213231013 has 4 divisors (see below), whose sum is σ = 13217467788. Its totient is φ = 13208994240.

The previous prime is 13213230949. The next prime is 13213231043. The reversal of 13213231013 is 31013231231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31013231231 = 87359 ⋅355009.

It can be written as a sum of positive squares in 2 ways, for example, as 463885444 + 12749345569 = 21538^2 + 112913^2 .

It is a cyclic number.

It is not a de Polignac number, because 13213231013 - 2⁶ = 13213230949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213231043) 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, 2113706 + ... + 2119947.

It is an arithmetic number, because the mean of its divisors is an integer number (3304366947).

Almost surely, 2^13213231013 is an apocalyptic number.

It is an amenable number.

13213231013 is a deficient number, since it is larger than the sum of its proper divisors (4236775).

13213231013 is an equidigital number, since it uses as much as digits as its factorization.

13213231013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236774.

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

Adding to 13213231013 its reverse (31013231231), we get a palindrome (44226462244).

The spelling of 13213231013 in words is "thirteen billion, two hundred thirteen million, two hundred thirty-one thousand, thirteen".