30421373 has 2 divisors, whose sum is σ = 30421374. Its totient is φ = 30421372.

The previous prime is 30421367. The next prime is 30421411. The reversal of 30421373 is 37312403.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18983449 + 11437924 = 4357^2 + 3382^2 .

It is an emirp because it is prime and its reverse (37312403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30421373 - 2⁸ = 30421117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30421333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15210686 + 15210687.

It is an arithmetic number, because the mean of its divisors is an integer number (15210687).

Almost surely, 2^30421373 is an apocalyptic number.

It is an amenable number.

30421373 is a deficient number, since it is larger than the sum of its proper divisors (1).

30421373 is an equidigital number, since it uses as much as digits as its factorization.

30421373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 30421373 is about 5515.5573607751. The cubic root of 30421373 is about 312.1712741671.

Adding to 30421373 its reverse (37312403), we get a palindrome (67733776).

The spelling of 30421373 in words is "thirty million, four hundred twenty-one thousand, three hundred seventy-three".