21932341 has 2 divisors, whose sum is σ = 21932342. Its totient is φ = 21932340.

The previous prime is 21932269. The next prime is 21932369. The reversal of 21932341 is 14323912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21022225 + 910116 = 4585^2 + 954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21932341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21932371) 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, 10966170 + 10966171.

It is an arithmetic number, because the mean of its divisors is an integer number (10966171).

Almost surely, 2^21932341 is an apocalyptic number.

It is an amenable number.

21932341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21932341 is an equidigital number, since it uses as much as digits as its factorization.

21932341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 21932341 is about 4683.1977323192. The cubic root of 21932341 is about 279.9163908528.

The spelling of 21932341 in words is "twenty-one million, nine hundred thirty-two thousand, three hundred forty-one".