422431531543 has 18 divisors (see below), whose sum is σ = 486017494728. Its totient is φ = 359671326840.

The previous prime is 422431531531. The next prime is 422431531547. The reversal of 422431531543 is 345135134224.

It is not a de Polignac number, because 422431531543 - 2¹³ = 422431523351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422431531547) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 287172298 + ... + 287173768.

Almost surely, 2^422431531543 is an apocalyptic number.

422431531543 is a deficient number, since it is larger than the sum of its proper divisors (63585963185).

422431531543 is an frugal number, since it uses more digits than its factorization.

422431531543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283 (or 1645 counting only the distinct ones).

The product of its digits is 172800, while the sum is 37.

Adding to 422431531543 its reverse (345135134224), we get a palindrome (767566665767).

The spelling of 422431531543 in words is "four hundred twenty-two billion, four hundred thirty-one million, five hundred thirty-one thousand, five hundred forty-three".