423545023231 has 4 divisors (see below), whose sum is σ = 462049116264. Its totient is φ = 385040930200.

The previous prime is 423545023219. The next prime is 423545023247. The reversal of 423545023231 is 132320545324.

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 423545023231 - 2⁵ = 423545023199 is a prime.

It is a super-2 number, since 2×423545023231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423545023201) 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, 19252046500 + ... + 19252046521.

It is an arithmetic number, because the mean of its divisors is an integer number (115512279066).

Almost surely, 2^423545023231 is an apocalyptic number.

423545023231 is a deficient number, since it is larger than the sum of its proper divisors (38504093033).

423545023231 is a wasteful number, since it uses less digits than its factorization.

423545023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38504093032.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 423545023231 its reverse (132320545324), we get a palindrome (555865568555).

The spelling of 423545023231 in words is "four hundred twenty-three billion, five hundred forty-five million, twenty-three thousand, two hundred thirty-one".