30345121 has 4 divisors (see below), whose sum is σ = 30842644. Its totient is φ = 29847600.

The previous prime is 30345103. The next prime is 30345149. The reversal of 30345121 is 12154303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2371600 + 27973521 = 1540^2 + 5289^2 .

It is a cyclic number.

It is not a de Polignac number, because 30345121 - 2²¹ = 28247969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30345101) 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 in 3 ways as a sum of consecutive naturals, for example, 248670 + ... + 248791.

It is an arithmetic number, because the mean of its divisors is an integer number (7710661).

Almost surely, 2^30345121 is an apocalyptic number.

It is an amenable number.

30345121 is a deficient number, since it is larger than the sum of its proper divisors (497523).

30345121 is an equidigital number, since it uses as much as digits as its factorization.

30345121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497522.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 30345121 is about 5508.6405764036. The cubic root of 30345121 is about 311.9102340103.

Adding to 30345121 its reverse (12154303), we get a palindrome (42499424).

The spelling of 30345121 in words is "thirty million, three hundred forty-five thousand, one hundred twenty-one".