13111211302231 has 16 divisors (see below), whose sum is σ = 15772997813760. Its totient is φ = 10646622275040.

The previous prime is 13111211302171. The next prime is 13111211302253. The reversal of 13111211302231 is 13220311211131.

It is a cyclic number.

It is not a de Polignac number, because 13111211302231 - 2¹⁷ = 13111211171159 is a prime.

It is a super-2 number, since 2×13111211302231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111211302831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25708686 + ... + 26213716.

It is an arithmetic number, because the mean of its divisors is an integer number (985812363360).

Almost surely, 2^{13111211302231} is an apocalyptic number.

13111211302231 is a deficient number, since it is larger than the sum of its proper divisors (2661786511529).

13111211302231 is a wasteful number, since it uses less digits than its factorization.

13111211302231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700254.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 13111211302231 its reverse (13220311211131), we get a palindrome (26331522513362).

The spelling of 13111211302231 in words is "thirteen trillion, one hundred eleven billion, two hundred eleven million, three hundred two thousand, two hundred thirty-one".