3636220531 has 2 divisors, whose sum is σ = 3636220532. Its totient is φ = 3636220530.

The previous prime is 3636220529. The next prime is 3636220561. The reversal of 3636220531 is 1350226363.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3636220531 - 2¹ = 3636220529 is a prime.

It is a super-2 number, since 2×3636220531² = 26444199500131843922, which contains 22 as substring.

Together with 3636220529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3636220493 and 3636220502.

It is not a weakly prime, because it can be changed into another prime (3636220561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1818110265 + 1818110266.

It is an arithmetic number, because the mean of its divisors is an integer number (1818110266).

Almost surely, 2^3636220531 is an apocalyptic number.

3636220531 is a deficient number, since it is larger than the sum of its proper divisors (1).

3636220531 is an equidigital number, since it uses as much as digits as its factorization.

3636220531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 3636220531 is about 60301.0823368868. The cubic root of 3636220531 is about 1537.7417470446.

Adding to 3636220531 its reverse (1350226363), we get a palindrome (4986446894).

The spelling of 3636220531 in words is "three billion, six hundred thirty-six million, two hundred twenty thousand, five hundred thirty-one".