301431421 has 2 divisors, whose sum is σ = 301431422. Its totient is φ = 301431420.

The previous prime is 301431397. The next prime is 301431443. The reversal of 301431421 is 124134103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231374521 + 70056900 = 15211^2 + 8370^2 .

It is an emirp because it is prime and its reverse (124134103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 301431421 - 2⁷ = 301431293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (301431121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150715710 + 150715711.

It is an arithmetic number, because the mean of its divisors is an integer number (150715711).

Almost surely, 2^301431421 is an apocalyptic number.

It is an amenable number.

301431421 is a deficient number, since it is larger than the sum of its proper divisors (1).

301431421 is an equidigital number, since it uses as much as digits as its factorization.

301431421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 301431421 is about 17361.7804674521. The cubic root of 301431421 is about 670.4959727038.

Adding to 301431421 its reverse (124134103), we get a palindrome (425565524).

The spelling of 301431421 in words is "three hundred one million, four hundred thirty-one thousand, four hundred twenty-one".