231220042423 has 8 divisors (see below), whose sum is σ = 243405648000. Its totient is φ = 219036049848.

The previous prime is 231220042381. The next prime is 231220042433. The reversal of 231220042423 is 324240022132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231220042423 - 2¹³ = 231220034231 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 (231220042433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103273 + ... + 687826.

It is an arithmetic number, because the mean of its divisors is an integer number (30425706000).

Almost surely, 2^231220042423 is an apocalyptic number.

231220042423 is a deficient number, since it is larger than the sum of its proper divisors (12185605577).

231220042423 is a wasteful number, since it uses less digits than its factorization.

231220042423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806501.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 231220042423 its reverse (324240022132), we get a palindrome (555460064555).

The spelling of 231220042423 in words is "two hundred thirty-one billion, two hundred twenty million, forty-two thousand, four hundred twenty-three".