13313538 has 32 divisors (see below), whose sum is σ = 33813120. Its totient is φ = 3803760.

The previous prime is 13313513. The next prime is 13313543. The reversal of 13313538 is 83531331.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 17233 + ... + 17988.

It is an arithmetic number, because the mean of its divisors is an integer number (1056660).

Almost surely, 2^13313538 is an apocalyptic number.

13313538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13313538 is an abundant number, since it is smaller than the sum of its proper divisors (20499582).

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

13313538 is a wasteful number, since it uses less digits than its factorization.

13313538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35239 (or 35233 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 13313538 is about 3648.7721222351. The cubic root of 13313538 is about 237.0088123626.

Adding to 13313538 its reverse (83531331), we get a palindrome (96844869).

The spelling of 13313538 in words is "thirteen million, three hundred thirteen thousand, five hundred thirty-eight".