303113421 has 20 divisors (see below), whose sum is σ = 487631452. Its totient is φ = 186530688.

The previous prime is 303113411. The next prime is 303113429. The reversal of 303113421 is 124311303.

It can be written as a sum of positive squares in 2 ways, for example, as 133749225 + 169364196 = 11565^2 + 13014^2 .

It is not a de Polignac number, because 303113421 - 2⁶ = 303113357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 303113394 and 303113403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303113429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 142876 + ... + 144981.

Almost surely, 2^303113421 is an apocalyptic number.

It is an amenable number.

303113421 is a deficient number, since it is larger than the sum of its proper divisors (184518031).

303113421 is a wasteful number, since it uses less digits than its factorization.

303113421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287882 (or 287873 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 303113421 is about 17410.1528138038. The cubic root of 303113421 is about 671.7407920896.

Adding to 303113421 its reverse (124311303), we get a palindrome (427424724).

The spelling of 303113421 in words is "three hundred three million, one hundred thirteen thousand, four hundred twenty-one".