13111333231 has 8 divisors (see below), whose sum is σ = 13564958400. Its totient is φ = 12657808800.

The previous prime is 13111333163. The next prime is 13111333243. The reversal of 13111333231 is 13233311131.

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

It is a cyclic number.

It is not a de Polignac number, because 13111333231 - 2¹⁵ = 13111300463 is a prime.

It is a super-2 number, since 2×13111333231² (a number of 21 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 (13111333531) 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, 320010 + ... + 358648.

It is an arithmetic number, because the mean of its divisors is an integer number (1695619800).

Almost surely, 2^13111333231 is an apocalyptic number.

13111333231 is a deficient number, since it is larger than the sum of its proper divisors (453625169).

13111333231 is a wasteful number, since it uses less digits than its factorization.

13111333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50369.

The product of its digits is 486, while the sum is 22.

Adding to 13111333231 its reverse (13233311131), we get a palindrome (26344644362).

The spelling of 13111333231 in words is "thirteen billion, one hundred eleven million, three hundred thirty-three thousand, two hundred thirty-one".