30130321 has 12 divisors (see below), whose sum is σ = 33368412. Its totient is φ = 27044928.

The previous prime is 30130283. The next prime is 30130339. The reversal of 30130321 is 12303103.

It can be written as a sum of positive squares in 6 ways, for example, as 1185921 + 28944400 = 1089^2 + 5380^2 .

It is not a de Polignac number, because 30130321 - 2⁷ = 30130193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30130351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16951 + ... + 18643.

It is an arithmetic number, because the mean of its divisors is an integer number (2780701).

Almost surely, 2^30130321 is an apocalyptic number.

It is an amenable number.

30130321 is a deficient number, since it is larger than the sum of its proper divisors (3238091).

30130321 is a wasteful number, since it uses less digits than its factorization.

30130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780 (or 1743 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30130321 is about 5489.1093084398. The cubic root of 30130321 is about 311.1725313778.

Adding to 30130321 its reverse (12303103), we get a palindrome (42433424).

The spelling of 30130321 in words is "thirty million, one hundred thirty thousand, three hundred twenty-one".