13311560 has 32 divisors (see below), whose sum is σ = 30404160. Its totient is φ = 5244096.

The previous prime is 13311547. The next prime is 13311563. The reversal of 13311560 is 6511331.

It is a happy number.

It is a super-3 number, since 3×13311560³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (13311563) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 197 + ... + 5163.

It is an arithmetic number, because the mean of its divisors is an integer number (950130).

Almost surely, 2^13311560 is an apocalyptic number.

13311560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13311560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15202080).

13311560 is an abundant number, since it is smaller than the sum of its proper divisors (17092600).

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

13311560 is a wasteful number, since it uses less digits than its factorization.

13311560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045 (or 5041 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 13311560 is about 3648.5010620802. The cubic root of 13311560 is about 236.9970742694.

Adding to 13311560 its reverse (6511331), we get a palindrome (19822891).

The spelling of 13311560 in words is "thirteen million, three hundred eleven thousand, five hundred sixty".