10363981 has 2 divisors, whose sum is σ = 10363982. Its totient is φ = 10363980.

The previous prime is 10363967. The next prime is 10364027. The reversal of 10363981 is 18936301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8608356 + 1755625 = 2934^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 10363981 - 2¹¹ = 10361933 is a prime.

It is a super-3 number, since 3×10363981³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10363181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5181990 + 5181991.

It is an arithmetic number, because the mean of its divisors is an integer number (5181991).

Almost surely, 2^10363981 is an apocalyptic number.

It is an amenable number.

10363981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10363981 is an equidigital number, since it uses as much as digits as its factorization.

10363981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 10363981 is about 3219.3137467479. The cubic root of 10363981 is about 218.0262923146.

The spelling of 10363981 in words is "ten million, three hundred sixty-three thousand, nine hundred eighty-one".