303424421 has 4 divisors (see below), whose sum is σ = 304166700. Its totient is φ = 302682144.

The previous prime is 303424411. The next prime is 303424481. The reversal of 303424421 is 124424303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 215796100 + 87628321 = 14690^2 + 9361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-303424421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303424411) 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, 370526 + ... + 371343.

It is an arithmetic number, because the mean of its divisors is an integer number (76041675).

Almost surely, 2^303424421 is an apocalyptic number.

It is an amenable number.

303424421 is a deficient number, since it is larger than the sum of its proper divisors (742279).

303424421 is an equidigital number, since it uses as much as digits as its factorization.

303424421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742278.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 303424421 is about 17419.0820940714. The cubic root of 303424421 is about 671.9704530719.

Adding to 303424421 its reverse (124424303), we get a palindrome (427848724).

The spelling of 303424421 in words is "three hundred three million, four hundred twenty-four thousand, four hundred twenty-one".