2106831 has 8 divisors (see below), whose sum is σ = 2856960. Its totient is φ = 1380632.

The previous prime is 2106829. The next prime is 2106833. The reversal of 2106831 is 1386012.

It is an interprime number because it is at equal distance from previous prime (2106829) and next prime (2106833).

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 2106831 - 2¹ = 2106829 is a prime.

It is a super-2 number, since 2×2106831² = 8877473725122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2106798 and 2106807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5775 + ... + 6128.

It is an arithmetic number, because the mean of its divisors is an integer number (357120).

2^2106831 is an apocalyptic number.

2106831 is a deficient number, since it is larger than the sum of its proper divisors (750129).

2106831 is a wasteful number, since it uses less digits than its factorization.

2106831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11965.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2106831 is about 1451.4926799678. The cubic root of 2106831 is about 128.1966175851.

The spelling of 2106831 in words is "two million, one hundred six thousand, eight hundred thirty-one".