2043931 has 2 divisors, whose sum is σ = 2043932. Its totient is φ = 2043930.

The previous prime is 2043911. The next prime is 2043953. The reversal of 2043931 is 1393402.

It is an a-pointer prime, because the next prime (2043953) can be obtained adding 2043931 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2043931 is a prime.

It is a super-2 number, since 2×2043931² = 8355307865522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2043911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021965 + 1021966.

It is an arithmetic number, because the mean of its divisors is an integer number (1021966).

2^2043931 is an apocalyptic number.

2043931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043931 is an equidigital number, since it uses as much as digits as its factorization.

2043931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 2043931 is about 1429.6611486643. The cubic root of 2043931 is about 126.9079250779.

The spelling of 2043931 in words is "two million, forty-three thousand, nine hundred thirty-one".