1243443023 has 2 divisors, whose sum is σ = 1243443024. Its totient is φ = 1243443022.

The previous prime is 1243443007. The next prime is 1243443029. The reversal of 1243443023 is 3203443421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243443023 - 2⁴ = 1243443007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243442983 and 1243443001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243443029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621721511 + 621721512.

It is an arithmetic number, because the mean of its divisors is an integer number (621721512).

Almost surely, 2^1243443023 is an apocalyptic number.

1243443023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243443023 is an equidigital number, since it uses as much as digits as its factorization.

1243443023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 1243443023 is about 35262.4874760701. The cubic root of 1243443023 is about 1075.3304981288.

Adding to 1243443023 its reverse (3203443421), we get a palindrome (4446886444).

The spelling of 1243443023 in words is "one billion, two hundred forty-three million, four hundred forty-three thousand, twenty-three".