108831155 has 4 divisors (see below), whose sum is σ = 130597392. Its totient is φ = 87064920.

The previous prime is 108831133. The next prime is 108831167. The reversal of 108831155 is 551138801.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 108831155 - 2⁸ = 108830899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10883111 + ... + 10883120.

It is an arithmetic number, because the mean of its divisors is an integer number (32649348).

Almost surely, 2^108831155 is an apocalyptic number.

108831155 is a deficient number, since it is larger than the sum of its proper divisors (21766237).

108831155 is an equidigital number, since it uses as much as digits as its factorization.

108831155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21766236.

The product of its (nonzero) digits is 4800, while the sum is 32.

The square root of 108831155 is about 10432.2171660678. The cubic root of 108831155 is about 477.4388397860.

Adding to 108831155 its reverse (551138801), we get a palindrome (659969956).

The spelling of 108831155 in words is "one hundred eight million, eight hundred thirty-one thousand, one hundred fifty-five".