336367981 has 2 divisors, whose sum is σ = 336367982. Its totient is φ = 336367980.

The previous prime is 336367979. The next prime is 336367991. The reversal of 336367981 is 189763633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185913225 + 150454756 = 13635^2 + 12266^2 .

It is an emirp because it is prime and its reverse (189763633) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 336367981 - 2¹ = 336367979 is a prime.

It is a super-2 number, since 2×336367981² = 226286837284032722, which contains 22 as substring.

Together with 336367979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (336367921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168183990 + 168183991.

It is an arithmetic number, because the mean of its divisors is an integer number (168183991).

Almost surely, 2^336367981 is an apocalyptic number.

It is an amenable number.

336367981 is a deficient number, since it is larger than the sum of its proper divisors (1).

336367981 is an equidigital number, since it uses as much as digits as its factorization.

336367981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 46.

The square root of 336367981 is about 18340.3375377881. The cubic root of 336367981 is about 695.4590284002.

The spelling of 336367981 in words is "three hundred thirty-six million, three hundred sixty-seven thousand, nine hundred eighty-one".