231301100020 has 24 divisors (see below), whose sum is σ = 514304799624. Its totient is φ = 87078061056.

The previous prime is 231301099999. The next prime is 231301100053. The reversal of 231301100020 is 20001103132.

It can be written as a sum of positive squares in 4 ways, for example, as 76559569636 + 154741530384 = 276694^2 + 393372^2 .

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 7 ways as a sum of consecutive naturals, for example, 340148337 + ... + 340149016.

It is an arithmetic number, because the mean of its divisors is an integer number (21429366651).

Almost surely, 2^231301100020 is an apocalyptic number.

231301100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231301100020 is an abundant number, since it is smaller than the sum of its proper divisors (283003699604).

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

231301100020 is a wasteful number, since it uses less digits than its factorization.

231301100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680297379 (or 680297377 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 231301100020 its reverse (20001103132), we get a palindrome (251302203152).

The spelling of 231301100020 in words is "two hundred thirty-one billion, three hundred one million, one hundred thousand, twenty".