2108931 has 8 divisors (see below), whose sum is σ = 3067584. Its totient is φ = 1278120.

The previous prime is 2108929. The next prime is 2108941. The reversal of 2108931 is 1398012.

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

It is not a de Polignac number, because 2108931 - 2¹ = 2108929 is a prime.

It is a super-2 number, since 2×2108931² = 8895179925522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2108941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31921 + ... + 31986.

It is an arithmetic number, because the mean of its divisors is an integer number (383448).

2^2108931 is an apocalyptic number.

2108931 is a deficient number, since it is larger than the sum of its proper divisors (958653).

2108931 is a wasteful number, since it uses less digits than its factorization.

2108931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63921.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 2108931 is about 1452.2158930407. The cubic root of 2108931 is about 128.2391970959.

The spelling of 2108931 in words is "two million, one hundred eight thousand, nine hundred thirty-one".