30321053 has 12 divisors (see below), whose sum is σ = 35516700. Its totient is φ = 25808832.

The previous prime is 30321041. The next prime is 30321073. The reversal of 30321053 is 35012303.

It can be written as a sum of positive squares in 2 ways, for example, as 1570009 + 28751044 = 1253^2 + 5362^2 .

It is not a de Polignac number, because 30321053 - 2¹⁶ = 30255517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5225 + ... + 9377.

It is an arithmetic number, because the mean of its divisors is an integer number (2959725).

Almost surely, 2^30321053 is an apocalyptic number.

It is an amenable number.

30321053 is a deficient number, since it is larger than the sum of its proper divisors (5195647).

30321053 is a wasteful number, since it uses less digits than its factorization.

30321053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4316 (or 4309 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 30321053 is about 5506.4555750501. The cubic root of 30321053 is about 311.8277491290.

Adding to 30321053 its reverse (35012303), we get a palindrome (65333356).

The spelling of 30321053 in words is "thirty million, three hundred twenty-one thousand, fifty-three".