108691212 has 48 divisors (see below), whose sum is σ = 295769600. Its totient is φ = 31053456.

The previous prime is 108691207. The next prime is 108691243. The reversal of 108691212 is 212196801.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 108691212.

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, 9088 + ... + 17319.

Almost surely, 2^108691212 is an apocalyptic number.

108691212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

108691212 is an abundant number, since it is smaller than the sum of its proper divisors (187078388).

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

108691212 is a wasteful number, since it uses less digits than its factorization.

108691212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26435 (or 26419 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 108691212 is about 10425.5077574188. The cubic root of 108691212 is about 477.2341101684.

The spelling of 108691212 in words is "one hundred eight million, six hundred ninety-one thousand, two hundred twelve".