13143320 has 32 divisors (see below), whose sum is σ = 29678400. Its totient is φ = 5238528.

The previous prime is 13143313. The next prime is 13143343. The reversal of 13143320 is 2334131.

It is a happy number.

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, 17921 + ... + 18639.

It is an arithmetic number, because the mean of its divisors is an integer number (927450).

Almost surely, 2^13143320 is an apocalyptic number.

13143320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13143320 is an abundant number, since it is smaller than the sum of its proper divisors (16535080).

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

13143320 is a wasteful number, since it uses less digits than its factorization.

13143320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187 (or 1183 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13143320 is about 3625.3717050807. The cubic root of 13143320 is about 235.9943980285.

Adding to 13143320 its reverse (2334131), we get a palindrome (15477451).

The spelling of 13143320 in words is "thirteen million, one hundred forty-three thousand, three hundred twenty".