203020310330020 has 12 divisors (see below), whose sum is σ = 426342651693084. Its totient is φ = 81208124132000.

The previous prime is 203020310330017. The next prime is 203020310330021. The reversal of 203020310330020 is 20033013020302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 74840596894116 + 128179713435904 = 8651046^2 + 11321648^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 203020310330020.

It is not an unprimeable number, because it can be changed into a prime (203020310330021) 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, 5075507758231 + ... + 5075507758270.

It is an arithmetic number, because the mean of its divisors is an integer number (35528554307757).

Almost surely, 2^{203020310330020} is an apocalyptic number.

203020310330020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203020310330020 is an abundant number, since it is smaller than the sum of its proper divisors (223322341363064).

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

203020310330020 is a wasteful number, since it uses less digits than its factorization.

203020310330020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10151015516510 (or 10151015516508 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 203020310330020 its reverse (20033013020302), we get a palindrome (223053323350322).

The spelling of 203020310330020 in words is "two hundred three trillion, twenty billion, three hundred ten million, three hundred thirty thousand, twenty".