303131130020 has 24 divisors (see below), whose sum is σ = 637090037304. Its totient is φ = 121154420736.

The previous prime is 303131130011. The next prime is 303131130041. The reversal of 303131130020 is 20031131303.

It can be written as a sum of positive squares in 4 ways, for example, as 78083360356 + 225047769664 = 279434^2 + 474392^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6101597 + ... + 6151076.

It is an arithmetic number, because the mean of its divisors is an integer number (26545418221).

Almost surely, 2^303131130020 is an apocalyptic number.

It is an amenable number.

303131130020 is an abundant number, since it is smaller than the sum of its proper divisors (333958907284).

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

303131130020 is a wasteful number, since it uses less digits than its factorization.

303131130020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12253919 (or 12253917 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 303131130020 its reverse (20031131303), we get a palindrome (323162261323).

The spelling of 303131130020 in words is "three hundred three billion, one hundred thirty-one million, one hundred thirty thousand, twenty".