13151320 has 64 divisors (see below), whose sum is σ = 36429120. Its totient is φ = 4161024.

The previous prime is 13151291. The next prime is 13151339. The reversal of 13151320 is 2315131.

It is a junction number, because it is equal to n+sod(n) for n = 13151294 and 13151303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1834 + ... + 5446.

It is an arithmetic number, because the mean of its divisors is an integer number (569205).

Almost surely, 2^13151320 is an apocalyptic number.

13151320 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 13151320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18214560).

13151320 is an abundant number, since it is smaller than the sum of its proper divisors (23277800).

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

13151320 is a wasteful number, since it uses less digits than its factorization.

13151320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3644 (or 3640 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 13151320 is about 3626.4748723795. The cubic root of 13151320 is about 236.0422695522.

Adding to 13151320 its reverse (2315131), we get a palindrome (15466451).

The spelling of 13151320 in words is "thirteen million, one hundred fifty-one thousand, three hundred twenty".