2146931 has 4 divisors (see below), whose sum is σ = 2152032. Its totient is φ = 2141832.

The previous prime is 2146909. The next prime is 2146939. The reversal of 2146931 is 1396412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2146931 is a prime.

It is a super-2 number, since 2×2146931² = 9218625437522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2146931.

It is not an unprimeable number, because it can be changed into a prime (2146939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1856 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (538008).

2^2146931 is an apocalyptic number.

2146931 is a deficient number, since it is larger than the sum of its proper divisors (5101).

2146931 is an equidigital number, since it uses as much as digits as its factorization.

2146931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100.

The product of its digits is 1296, while the sum is 26.

The square root of 2146931 is about 1465.2409358191. The cubic root of 2146931 is about 129.0048472830.

The spelling of 2146931 in words is "two million, one hundred forty-six thousand, nine hundred thirty-one".