303404421 has 4 divisors (see below), whose sum is σ = 404539232. Its totient is φ = 202269612.

The previous prime is 303404401. The next prime is 303404429. The reversal of 303404421 is 124404303.

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 303404421 - 2⁶ = 303404357 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 (303404429) 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, 50567401 + ... + 50567406.

It is an arithmetic number, because the mean of its divisors is an integer number (101134808).

Almost surely, 2^303404421 is an apocalyptic number.

It is an amenable number.

303404421 is a deficient number, since it is larger than the sum of its proper divisors (101134811).

303404421 is a wasteful number, since it uses less digits than its factorization.

303404421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101134810.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 303404421 is about 17418.5080015482. The cubic root of 303404421 is about 671.9556885996.

Adding to 303404421 its reverse (124404303), we get a palindrome (427808724).

The spelling of 303404421 in words is "three hundred three million, four hundred four thousand, four hundred twenty-one".