108691213 has 8 divisors (see below), whose sum is σ = 111571200. Its totient is φ = 105834960.

The previous prime is 108691207. The next prime is 108691243. The reversal of 108691213 is 312196801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108691213 is a prime.

It is a super-2 number, since 2×108691213² = 23627559566822738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108691243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3543 + ... + 15163.

It is an arithmetic number, because the mean of its divisors is an integer number (13946400).

Almost surely, 2^108691213 is an apocalyptic number.

It is an amenable number.

108691213 is a deficient number, since it is larger than the sum of its proper divisors (2879987).

108691213 is a wasteful number, since it uses less digits than its factorization.

108691213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11867.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 108691213 is about 10425.5078053781. The cubic root of 108691213 is about 477.2341116320.

The spelling of 108691213 in words is "one hundred eight million, six hundred ninety-one thousand, two hundred thirteen".