109688831 has 8 divisors (see below), whose sum is σ = 128747040. Its totient is φ = 91477728.

The previous prime is 109688827. The next prime is 109688837. The reversal of 109688831 is 138886901.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 109688831 - 2² = 109688827 is a prime.

It is a super-2 number, since 2×109688831² = 24063279292293122, 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 (109688837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211496 + ... + 212013.

It is an arithmetic number, because the mean of its divisors is an integer number (16093380).

Almost surely, 2^109688831 is an apocalyptic number.

109688831 is a deficient number, since it is larger than the sum of its proper divisors (19058209).

109688831 is an equidigital number, since it uses as much as digits as its factorization.

109688831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423553.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 109688831 is about 10473.2435758938. The cubic root of 109688831 is about 478.6897586148.

The spelling of 109688831 in words is "one hundred nine million, six hundred eighty-eight thousand, eight hundred thirty-one".