231013433020 has 12 divisors (see below), whose sum is σ = 485128209384. Its totient is φ = 92405373200.

The previous prime is 231013433011. The next prime is 231013433047. The reversal of 231013433020 is 20334310132.

It is a junction number, because it is equal to n+sod(n) for n = 231013432982 and 231013433000.

It is a congruent number.

It is an unprimeable number.

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, 5775335806 + ... + 5775335845.

It is an arithmetic number, because the mean of its divisors is an integer number (40427350782).

Almost surely, 2^231013433020 is an apocalyptic number.

231013433020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231013433020 is an abundant number, since it is smaller than the sum of its proper divisors (254114776364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231013433020 is a wasteful number, since it uses less digits than its factorization.

231013433020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11550671660 (or 11550671658 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 231013433020 its reverse (20334310132), we get a palindrome (251347743152).

The spelling of 231013433020 in words is "two hundred thirty-one billion, thirteen million, four hundred thirty-three thousand, twenty".