4821631 has 2 divisors, whose sum is σ = 4821632. Its totient is φ = 4821630.

The previous prime is 4821629. The next prime is 4821637. The reversal of 4821631 is 1361284.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4821631 - 2¹ = 4821629 is a prime.

It is a super-2 number, since 2×4821631² = 46496251000322, which contains 22 as substring.

Together with 4821629, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 4821596 and 4821605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4821637) 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, 2410815 + 2410816.

It is an arithmetic number, because the mean of its divisors is an integer number (2410816).

Almost surely, 2^4821631 is an apocalyptic number.

4821631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4821631 is an equidigital number, since it uses as much as digits as its factorization.

4821631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 4821631 is about 2195.8212586638. The cubic root of 4821631 is about 168.9395463197.

The spelling of 4821631 in words is "four million, eight hundred twenty-one thousand, six hundred thirty-one".