2000123443 has 2 divisors, whose sum is σ = 2000123444. Its totient is φ = 2000123442.

The previous prime is 2000123431. The next prime is 2000123471. The reversal of 2000123443 is 3443210002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2000123443 - 2¹³ = 2000115251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2000123443.

It is not a weakly prime, because it can be changed into another prime (2000123743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000061721 + 1000061722.

It is an arithmetic number, because the mean of its divisors is an integer number (1000061722).

Almost surely, 2^2000123443 is an apocalyptic number.

2000123443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000123443 is an equidigital number, since it uses as much as digits as its factorization.

2000123443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2000123443 is about 44722.7396633972. The cubic root of 2000123443 is about 1259.9469707673.

Adding to 2000123443 its reverse (3443210002), we get a palindrome (5443333445).

The spelling of 2000123443 in words is "two billion, one hundred twenty-three thousand, four hundred forty-three".