300344999999981 has 2 divisors, whose sum is σ = 300344999999982. Its totient is φ = 300344999999980.

The previous prime is 300344999999977. The next prime is 300345000000029. The reversal of 300344999999981 is 189999999443003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154610970958756 + 145734029041225 = 12434266^2 + 12072035^2 .

It is a cyclic number.

It is not a de Polignac number, because 300344999999981 - 2² = 300344999999977 is a prime.

It is a super-2 number, since 2×300344999999981² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 300344999999893 and 300344999999902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (300344999999971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150172499999990 + 150172499999991.

It is an arithmetic number, because the mean of its divisors is an integer number (150172499999991).

Almost surely, 2^{300344999999981} is an apocalyptic number.

It is an amenable number.

300344999999981 is a deficient number, since it is larger than the sum of its proper divisors (1).

300344999999981 is an equidigital number, since it uses as much as digits as its factorization.

300344999999981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5509980288, while the sum is 86.

The spelling of 300344999999981 in words is "three hundred trillion, three hundred forty-four billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-one".