203310231020 has 48 divisors (see below), whose sum is σ = 466656542688. Its totient is φ = 73947962880.

The previous prime is 203310231017. The next prime is 203310231023. The reversal of 203310231020 is 20132013302.

It is an interprime number because it is at equal distance from previous prime (203310231017) and next prime (203310231023).

It is a self number, because there is not a number n which added to its sum of digits gives 203310231020.

It is not an unprimeable number, because it can be changed into a prime (203310231023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5818121 + ... + 5852960.

It is an arithmetic number, because the mean of its divisors is an integer number (9722011306).

Almost surely, 2^203310231020 is an apocalyptic number.

203310231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203310231020 is an abundant number, since it is smaller than the sum of its proper divisors (263346311668).

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

203310231020 is a wasteful number, since it uses less digits than its factorization.

203310231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11671170 (or 11671168 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 203310231020 its reverse (20132013302), we get a palindrome (223442244322).

The spelling of 203310231020 in words is "two hundred three billion, three hundred ten million, two hundred thirty-one thousand, twenty".