21823060631 has 2 divisors, whose sum is σ = 21823060632. Its totient is φ = 21823060630.

The previous prime is 21823060573. The next prime is 21823060639. The reversal of 21823060631 is 13606032812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21823060631 - 2¹⁴ = 21823044247 is a prime.

It is a super-2 number, since 2×21823060631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21823060639) 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, 10911530315 + 10911530316.

It is an arithmetic number, because the mean of its divisors is an integer number (10911530316).

Almost surely, 2^21823060631 is an apocalyptic number.

21823060631 is a deficient number, since it is larger than the sum of its proper divisors (1).

21823060631 is an equidigital number, since it uses as much as digits as its factorization.

21823060631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 21823060631 in words is "twenty-one billion, eight hundred twenty-three million, sixty thousand, six hundred thirty-one".