30004432981 has 4 divisors (see below), whose sum is σ = 30570554412. Its totient is φ = 29438311552.

The previous prime is 30004432979. The next prime is 30004432987. The reversal of 30004432981 is 18923440003.

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 11183062500 + 18821370481 = 105750^2 + 137191^2 .

It is a cyclic number.

It is not a de Polignac number, because 30004432981 - 2¹ = 30004432979 is a prime.

It is a super-2 number, since 2×30004432981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30004432987) 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, 283060636 + ... + 283060741.

It is an arithmetic number, because the mean of its divisors is an integer number (7642638603).

Almost surely, 2^30004432981 is an apocalyptic number.

It is an amenable number.

30004432981 is a deficient number, since it is larger than the sum of its proper divisors (566121431).

30004432981 is an equidigital number, since it uses as much as digits as its factorization.

30004432981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566121430.

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 30004432981 its reverse (18923440003), we get a palindrome (48927872984).

The spelling of 30004432981 in words is "thirty billion, four million, four hundred thirty-two thousand, nine hundred eighty-one".