231020424433 has 4 divisors (see below), whose sum is σ = 243179394160. Its totient is φ = 218861454708.

The previous prime is 231020424431. The next prime is 231020424451. The reversal of 231020424433 is 334424020132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 231020424433 - 2¹ = 231020424431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231020424431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6079484835 + ... + 6079484872.

It is an arithmetic number, because the mean of its divisors is an integer number (60794848540).

Almost surely, 2^231020424433 is an apocalyptic number.

It is an amenable number.

231020424433 is a deficient number, since it is larger than the sum of its proper divisors (12158969727).

231020424433 is a wasteful number, since it uses less digits than its factorization.

231020424433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12158969726.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 231020424433 its reverse (334424020132), we get a palindrome (565444444565).

The spelling of 231020424433 in words is "two hundred thirty-one billion, twenty million, four hundred twenty-four thousand, four hundred thirty-three".