4021936631 has 2 divisors, whose sum is σ = 4021936632. Its totient is φ = 4021936630.

The previous prime is 4021936627. The next prime is 4021936649. The reversal of 4021936631 is 1366391204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4021936631 - 2² = 4021936627 is a prime.

It is a super-2 number, since 2×4021936631² = 32351948527559260322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 4021936591 and 4021936600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021936661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010968315 + 2010968316.

It is an arithmetic number, because the mean of its divisors is an integer number (2010968316).

Almost surely, 2^4021936631 is an apocalyptic number.

4021936631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021936631 is an equidigital number, since it uses as much as digits as its factorization.

4021936631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 4021936631 is about 63418.7403769580. The cubic root of 4021936631 is about 1590.2976159263.

The spelling of 4021936631 in words is "four billion, twenty-one million, nine hundred thirty-six thousand, six hundred thirty-one".