300021031993 has 2 divisors, whose sum is σ = 300021031994. Its totient is φ = 300021031992.

The previous prime is 300021031991. The next prime is 300021032021. The reversal of 300021031993 is 399130120003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203426256784 + 96594775209 = 451028^2 + 310797^2 .

It is an emirp because it is prime and its reverse (399130120003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 300021031993 - 2¹ = 300021031991 is a prime.

Together with 300021031991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (300021031991) 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 as a sum of consecutive naturals, namely, 150010515996 + 150010515997.

It is an arithmetic number, because the mean of its divisors is an integer number (150010515997).

Almost surely, 2^300021031993 is an apocalyptic number.

It is an amenable number.

300021031993 is a deficient number, since it is larger than the sum of its proper divisors (1).

300021031993 is an equidigital number, since it uses as much as digits as its factorization.

300021031993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 31.

Adding to 300021031993 its reverse (399130120003), we get a palindrome (699151151996).

The spelling of 300021031993 in words is "three hundred billion, twenty-one million, thirty-one thousand, nine hundred ninety-three".