1530304321 has 16 divisors (see below), whose sum is σ = 1911570304. Its totient is φ = 1192713984.

The previous prime is 1530304319. The next prime is 1530304331. The reversal of 1530304321 is 1234030351.

It is not a de Polignac number, because 1530304321 - 2¹ = 1530304319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1530304292 and 1530304301.

It is not an unprimeable number, because it can be changed into a prime (1530304331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119400 + ... + 131593.

It is an arithmetic number, because the mean of its divisors is an integer number (119473144).

Almost surely, 2^1530304321 is an apocalyptic number.

It is an amenable number.

1530304321 is a deficient number, since it is larger than the sum of its proper divisors (381265983).

1530304321 is a wasteful number, since it uses less digits than its factorization.

1530304321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251080.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1530304321 is about 39119.1042970056. The cubic root of 1530304321 is about 1152.3717456324.

Adding to 1530304321 its reverse (1234030351), we get a palindrome (2764334672).

The spelling of 1530304321 in words is "one billion, five hundred thirty million, three hundred four thousand, three hundred twenty-one".