10821631 has 2 divisors, whose sum is σ = 10821632. Its totient is φ = 10821630.

The previous prime is 10821589. The next prime is 10821641. The reversal of 10821631 is 13612801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10821631 - 2¹¹ = 10819583 is a prime.

It is a super-2 number, since 2×10821631² = 234215395000322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10821641) 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, 5410815 + 5410816.

It is an arithmetic number, because the mean of its divisors is an integer number (5410816).

Almost surely, 2^10821631 is an apocalyptic number.

10821631 is a deficient number, since it is larger than the sum of its proper divisors (1).

10821631 is an equidigital number, since it uses as much as digits as its factorization.

10821631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 10821631 is about 3289.6247506365. The cubic root of 10821631 is about 221.1893642555.

The spelling of 10821631 in words is "ten million, eight hundred twenty-one thousand, six hundred thirty-one".