1023543043 has 2 divisors, whose sum is σ = 1023543044. Its totient is φ = 1023543042.

The previous prime is 1023543013. The next prime is 1023543077. The reversal of 1023543043 is 3403453201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1023543043 - 2⁵ = 1023543011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023542999 and 1023543017.

It is not a weakly prime, because it can be changed into another prime (1023543013) 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, 511771521 + 511771522.

It is an arithmetic number, because the mean of its divisors is an integer number (511771522).

Almost surely, 2^1023543043 is an apocalyptic number.

1023543043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023543043 is an equidigital number, since it uses as much as digits as its factorization.

1023543043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 1023543043 is about 31992.8592501514. The cubic root of 1023543043 is about 1007.7868879879.

Adding to 1023543043 its reverse (3403453201), we get a palindrome (4426996244).

The spelling of 1023543043 in words is "one billion, twenty-three million, five hundred forty-three thousand, forty-three".