13213116 has 36 divisors (see below), whose sum is σ = 38171952. Its totient is φ = 3775104.

The previous prime is 13213093. The next prime is 13213121. The reversal of 13213116 is 61131231.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25965 + ... + 26468.

It is an arithmetic number, because the mean of its divisors is an integer number (1060332).

Almost surely, 2^13213116 is an apocalyptic number.

It is an amenable number.

13213116 is an abundant number, since it is smaller than the sum of its proper divisors (24958836).

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

13213116 is a wasteful number, since it uses less digits than its factorization.

13213116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52450 (or 52445 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 13213116 is about 3634.9850068467. The cubic root of 13213116 is about 236.4114005857.

Adding to 13213116 its reverse (61131231), we get a palindrome (74344347).

The spelling of 13213116 in words is "thirteen million, two hundred thirteen thousand, one hundred sixteen".