43442315023 has 2 divisors, whose sum is σ = 43442315024. Its totient is φ = 43442315022.

The previous prime is 43442315009. The next prime is 43442315057. The reversal of 43442315023 is 32051324434.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43442315023 - 2⁵ = 43442314991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43442315003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21721157511 + 21721157512.

It is an arithmetic number, because the mean of its divisors is an integer number (21721157512).

Almost surely, 2^43442315023 is an apocalyptic number.

43442315023 is a deficient number, since it is larger than the sum of its proper divisors (1).

43442315023 is an equidigital number, since it uses as much as digits as its factorization.

43442315023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 43442315023 its reverse (32051324434), we get a palindrome (75493639457).

The spelling of 43442315023 in words is "forty-three billion, four hundred forty-two million, three hundred fifteen thousand, twenty-three".