13111230331 has 24 divisors (see below), whose sum is σ = 14199388560. Its totient is φ = 12101763072.

The previous prime is 13111230329. The next prime is 13111230343. The reversal of 13111230331 is 13303211131.

It is not a de Polignac number, because 13111230331 - 2¹ = 13111230329 is a prime.

It is a super-2 number, since 2×13111230331² (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 = 13111230299 and 13111230308.

It is not an unprimeable number, because it can be changed into a prime (13111230361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3165660 + ... + 3169798.

It is an arithmetic number, because the mean of its divisors is an integer number (591641190).

Almost surely, 2^13111230331 is an apocalyptic number.

13111230331 is a deficient number, since it is larger than the sum of its proper divisors (1088158229).

13111230331 is a wasteful number, since it uses less digits than its factorization.

13111230331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4383 (or 4366 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13111230331 its reverse (13303211131), we get a palindrome (26414441462).

The spelling of 13111230331 in words is "thirteen billion, one hundred eleven million, two hundred thirty thousand, three hundred thirty-one".