303440020000 has 120 divisors (see below), whose sum is σ = 803932343676. Its totient is φ = 112039296000.

The previous prime is 303440019947. The next prime is 303440020007. The reversal of 303440020000 is 20044303.

It can be written as a sum of positive squares in 10 ways, for example, as 57832554256 + 245607465744 = 240484^2 + 495588^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (303440020007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 323539 + ... + 843538.

Almost surely, 2^303440020000 is an apocalyptic number.

It is an amenable number.

303440020000 is an abundant number, since it is smaller than the sum of its proper divisors (500492323676).

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

303440020000 is a wasteful number, since it uses less digits than its factorization.

303440020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167120 (or 1167097 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 303440020000 its reverse (20044303), we get a palindrome (303460064303).

The spelling of 303440020000 in words is "three hundred three billion, four hundred forty million, twenty thousand".