13171320 has 48 divisors (see below), whose sum is σ = 42807960. Its totient is φ = 3512256.

The previous prime is 13171289. The next prime is 13171321. The reversal of 13171320 is 2317131.

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

It is a junction number, because it is equal to n+sod(n) for n = 13171293 and 13171302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13171321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17934 + ... + 18653.

Almost surely, 2^13171320 is an apocalyptic number.

13171320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13171320 is an abundant number, since it is smaller than the sum of its proper divisors (29636640).

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

13171320 is a wasteful number, since it uses less digits than its factorization.

13171320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36604 (or 36597 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 13171320 is about 3629.2313235725. The cubic root of 13171320 is about 236.1618634870.

Adding to 13171320 its reverse (2317131), we get a palindrome (15488451).

The spelling of 13171320 in words is "thirteen million, one hundred seventy-one thousand, three hundred twenty".