423442163531 has 4 divisors (see below), whose sum is σ = 423510765552. Its totient is φ = 423373561512.

The previous prime is 423442163491. The next prime is 423442163533. The reversal of 423442163531 is 135361244324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423442163531 - 2¹⁴ = 423442147147 is a prime.

It is a super-2 number, since 2×423442163531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423442163533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34291751 + ... + 34304096.

It is an arithmetic number, because the mean of its divisors is an integer number (105877691388).

Almost surely, 2^423442163531 is an apocalyptic number.

423442163531 is a deficient number, since it is larger than the sum of its proper divisors (68602021).

423442163531 is an equidigital number, since it uses as much as digits as its factorization.

423442163531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68602020.

The product of its digits is 207360, while the sum is 38.

The spelling of 423442163531 in words is "four hundred twenty-three billion, four hundred forty-two million, one hundred sixty-three thousand, five hundred thirty-one".