30012032321 has 4 divisors (see below), whose sum is σ = 30020511444. Its totient is φ = 30003553200.

The previous prime is 30012032317. The next prime is 30012032329. The reversal of 30012032321 is 12323021003.

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 8997471025 + 21014561296 = 94855^2 + 144964^2 .

It is a cyclic number.

It is not a de Polignac number, because 30012032321 - 2² = 30012032317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30012032321.

It is not an unprimeable number, because it can be changed into a prime (30012032329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4234250 + ... + 4241331.

It is an arithmetic number, because the mean of its divisors is an integer number (7505127861).

Almost surely, 2^30012032321 is an apocalyptic number.

It is an amenable number.

30012032321 is a deficient number, since it is larger than the sum of its proper divisors (8479123).

30012032321 is an equidigital number, since it uses as much as digits as its factorization.

30012032321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8479122.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 30012032321 its reverse (12323021003), we get a palindrome (42335053324).

The spelling of 30012032321 in words is "thirty billion, twelve million, thirty-two thousand, three hundred twenty-one".