301304021 has 2 divisors, whose sum is σ = 301304022. Its totient is φ = 301304020.

The previous prime is 301304009. The next prime is 301304023. The reversal of 301304021 is 120403103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297183121 + 4120900 = 17239^2 + 2030^2 .

It is an emirp because it is prime and its reverse (120403103) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-301304021 is a prime.

It is a super-2 number, since 2×301304021² = 181568226141536882, which contains 22 as substring.

Together with 301304023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 301303987 and 301304005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (301304023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150652010 + 150652011.

It is an arithmetic number, because the mean of its divisors is an integer number (150652011).

Almost surely, 2^301304021 is an apocalyptic number.

It is an amenable number.

301304021 is a deficient number, since it is larger than the sum of its proper divisors (1).

301304021 is an equidigital number, since it uses as much as digits as its factorization.

301304021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 301304021 is about 17358.1111011538. Note that the first 4 decimals coincide. The cubic root of 301304021 is about 670.4014976777.

Adding to 301304021 its reverse (120403103), we get a palindrome (421707124).

The spelling of 301304021 in words is "three hundred one million, three hundred four thousand, twenty-one".