36931481 has 2 divisors, whose sum is σ = 36931482. Its totient is φ = 36931480.

The previous prime is 36931469. The next prime is 36931483. The reversal of 36931481 is 18413963.

36931481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34633225 + 2298256 = 5885^2 + 1516^2 .

It is an emirp because it is prime and its reverse (18413963) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36931481 is a prime.

It is a super-2 number, since 2×36931481² = 2727868577706722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 36931483, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (36931483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18465740 + 18465741.

It is an arithmetic number, because the mean of its divisors is an integer number (18465741).

Almost surely, 2^36931481 is an apocalyptic number.

It is an amenable number.

36931481 is a deficient number, since it is larger than the sum of its proper divisors (1).

36931481 is an equidigital number, since it uses as much as digits as its factorization.

36931481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 36931481 is about 6077.1276932446. The cubic root of 36931481 is about 333.0163639089.

The spelling of 36931481 in words is "thirty-six million, nine hundred thirty-one thousand, four hundred eighty-one".