13111860 has 24 divisors (see below), whose sum is σ = 36713376. Its totient is φ = 3496480.

The previous prime is 13111849. The next prime is 13111871. The reversal of 13111860 is 6811131.

It is an interprime number because it is at equal distance from previous prime (13111849) and next prime (13111871).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109206 + ... + 109325.

It is an arithmetic number, because the mean of its divisors is an integer number (1529724).

Almost surely, 2^13111860 is an apocalyptic number.

13111860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111860 is an abundant number, since it is smaller than the sum of its proper divisors (23601516).

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

13111860 is a wasteful number, since it uses less digits than its factorization.

13111860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218543 (or 218541 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 13111860 is about 3621.0302401388. The cubic root of 13111860 is about 235.8059546380.

Adding to 13111860 its reverse (6811131), we get a palindrome (19922991).

The spelling of 13111860 in words is "thirteen million, one hundred eleven thousand, eight hundred sixty".