2106731 has 12 divisors (see below), whose sum is σ = 2419536. Its totient is φ = 1829520.

The previous prime is 2106679. The next prime is 2106733. The reversal of 2106731 is 1376012.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2106731 is a prime.

It is a super-2 number, since 2×2106731² = 8876631012722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2405 + ... + 3161.

It is an arithmetic number, because the mean of its divisors is an integer number (201628).

2^2106731 is an apocalyptic number.

2106731 is a deficient number, since it is larger than the sum of its proper divisors (312805).

2106731 is a wasteful number, since it uses less digits than its factorization.

2106731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2106731 is about 1451.4582322616. The cubic root of 2106731 is about 128.1945892838.

The spelling of 2106731 in words is "two million, one hundred six thousand, seven hundred thirty-one".