301421321 has 2 divisors, whose sum is σ = 301421322. Its totient is φ = 301421320.

The previous prime is 301421287. The next prime is 301421327. The reversal of 301421321 is 123124103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238393600 + 63027721 = 15440^2 + 7939^2 .

It is an emirp because it is prime and its reverse (123124103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 301421321 - 2²⁶ = 234312457 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 301421321.

It is not a weakly prime, because it can be changed into another prime (301421327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150710660 + 150710661.

It is an arithmetic number, because the mean of its divisors is an integer number (150710661).

Almost surely, 2^301421321 is an apocalyptic number.

It is an amenable number.

301421321 is a deficient number, since it is larger than the sum of its proper divisors (1).

301421321 is an equidigital number, since it uses as much as digits as its factorization.

301421321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 301421321 is about 17361.4895962299. The cubic root of 301421321 is about 670.4884838971.

Adding to 301421321 its reverse (123124103), we get a palindrome (424545424).

The spelling of 301421321 in words is "three hundred one million, four hundred twenty-one thousand, three hundred twenty-one".