13081973 has 2 divisors, whose sum is σ = 13081974. Its totient is φ = 13081972.

The previous prime is 13081961. The next prime is 13081997. The reversal of 13081973 is 37918031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8162449 + 4919524 = 2857^2 + 2218^2 .

It is an emirp because it is prime and its reverse (37918031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13081973 - 2⁶ = 13081909 is a prime.

It is a super-2 number, since 2×13081973² = 342276035145458, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13081903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6540986 + 6540987.

It is an arithmetic number, because the mean of its divisors is an integer number (6540987).

Almost surely, 2^13081973 is an apocalyptic number.

It is an amenable number.

13081973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13081973 is an equidigital number, since it uses as much as digits as its factorization.

13081973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 13081973 is about 3616.9010215929. The cubic root of 13081973 is about 235.6266540140.

The spelling of 13081973 in words is "thirteen million, eighty-one thousand, nine hundred seventy-three".