303020013 has 4 divisors (see below), whose sum is σ = 404026688. Its totient is φ = 202013340.

The previous prime is 303019979. The next prime is 303020017. The reversal of 303020013 is 310020303.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 303020013 - 2⁹ = 303019501 is a prime.

It is a super-2 number, since 2×303020013² = 183642256557040338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303020017) 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, 50503333 + ... + 50503338.

It is an arithmetic number, because the mean of its divisors is an integer number (101006672).

Almost surely, 2^303020013 is an apocalyptic number.

It is an amenable number.

303020013 is a deficient number, since it is larger than the sum of its proper divisors (101006675).

303020013 is a wasteful number, since it uses less digits than its factorization.

303020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101006674.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 303020013 is about 17407.4700344421. The cubic root of 303020013 is about 671.6717833666.

Adding to 303020013 its reverse (310020303), we get a palindrome (613040316).

The spelling of 303020013 in words is "three hundred three million, twenty thousand, thirteen".