2141343991 has 2 divisors, whose sum is σ = 2141343992. Its totient is φ = 2141343990.

The previous prime is 2141343989. The next prime is 2141344019. The reversal of 2141343991 is 1993431412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2141343991 - 2¹ = 2141343989 is a prime.

Together with 2141343989, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2141343991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2141343931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070671995 + 1070671996.

It is an arithmetic number, because the mean of its divisors is an integer number (1070671996).

Almost surely, 2^2141343991 is an apocalyptic number.

2141343991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141343991 is an equidigital number, since it uses as much as digits as its factorization.

2141343991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 2141343991 is about 46274.6581943076. The cubic root of 2141343991 is about 1288.9284595679.

The spelling of 2141343991 in words is "two billion, one hundred forty-one million, three hundred forty-three thousand, nine hundred ninety-one".