2043012991 has 2 divisors, whose sum is σ = 2043012992. Its totient is φ = 2043012990.

The previous prime is 2043012919. The next prime is 2043013009. The reversal of 2043012991 is 1992103402.

Together with previous prime (2043012919) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2043012991 - 2⁷ = 2043012863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043012691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021506495 + 1021506496.

It is an arithmetic number, because the mean of its divisors is an integer number (1021506496).

Almost surely, 2^2043012991 is an apocalyptic number.

2043012991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043012991 is an equidigital number, since it uses as much as digits as its factorization.

2043012991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2043012991 is about 45199.7012268887. The cubic root of 2043012991 is about 1268.8892246904.

The spelling of 2043012991 in words is "two billion, forty-three million, twelve thousand, nine hundred ninety-one".