13111146 has 20 divisors (see below), whose sum is σ = 29379042. Its totient is φ = 4370328.

The previous prime is 13111139. The next prime is 13111177. The reversal of 13111146 is 64111131.

It can be written as a sum of positive squares in only one way, i.e., 11634921 + 1476225 = 3411^2 + 1215^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40305 + ... + 40628.

Almost surely, 2^13111146 is an apocalyptic number.

13111146 is an abundant number, since it is smaller than the sum of its proper divisors (16267896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13111146 is an equidigital number, since it uses as much as digits as its factorization.

13111146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80947 (or 80938 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 13111146 is about 3620.9316480707. The cubic root of 13111146 is about 235.8016743272.

Adding to 13111146 its reverse (64111131), we get a palindrome (77222277).

The spelling of 13111146 in words is "thirteen million, one hundred eleven thousand, one hundred forty-six".