301023019981 has 2 divisors, whose sum is σ = 301023019982. Its totient is φ = 301023019980.

The previous prime is 301023019967. The next prime is 301023020057. The reversal of 301023019981 is 189910320103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243533367081 + 57489652900 = 493491^2 + 239770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-301023019981 is a prime.

It is a super-2 number, since 2×301023019981² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 301023019981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (301023019961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150511509990 + 150511509991.

It is an arithmetic number, because the mean of its divisors is an integer number (150511509991).

Almost surely, 2^301023019981 is an apocalyptic number.

It is an amenable number.

301023019981 is a deficient number, since it is larger than the sum of its proper divisors (1).

301023019981 is an equidigital number, since it uses as much as digits as its factorization.

301023019981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 301023019981 in words is "three hundred one billion, twenty-three million, nineteen thousand, nine hundred eighty-one".