13311860 has 24 divisors (see below), whose sum is σ = 28712040. Its totient is φ = 5180544.

The previous prime is 13311853. The next prime is 13311863. The reversal of 13311860 is 6811331.

It can be written as a sum of positive squares in 4 ways, for example, as 5438224 + 7873636 = 2332^2 + 2806^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311863) 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, 8255 + ... + 9734.

It is an arithmetic number, because the mean of its divisors is an integer number (1196335).

Almost surely, 2^13311860 is an apocalyptic number.

13311860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13311860 is an abundant number, since it is smaller than the sum of its proper divisors (15400180).

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

13311860 is a wasteful number, since it uses less digits than its factorization.

13311860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18035 (or 18033 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 13311860 is about 3648.5421746226. The cubic root of 13311860 is about 236.9988546415.

The spelling of 13311860 in words is "thirteen million, three hundred eleven thousand, eight hundred sixty".