303221401 has 24 divisors (see below), whose sum is σ = 378165056. Its totient is φ = 237945600.

The previous prime is 303221389. The next prime is 303221417. The reversal of 303221401 is 104122303.

It is a happy number.

It is not a de Polignac number, because 303221401 - 2¹⁷ = 303090329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (303221101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72826 + ... + 76876.

Almost surely, 2^303221401 is an apocalyptic number.

It is an amenable number.

303221401 is a deficient number, since it is larger than the sum of its proper divisors (74943655).

303221401 is a wasteful number, since it uses less digits than its factorization.

303221401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129 (or 4112 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 303221401 is about 17413.2536017828. The cubic root of 303221401 is about 671.8205487684.

Adding to 303221401 its reverse (104122303), we get a palindrome (407343704).

The spelling of 303221401 in words is "three hundred three million, two hundred twenty-one thousand, four hundred one".