106821343 has 2 divisors, whose sum is σ = 106821344. Its totient is φ = 106821342.

The previous prime is 106821317. The next prime is 106821349. The reversal of 106821343 is 343128601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 106821343 - 2¹⁷ = 106690271 is a prime.

It is a super-2 number, since 2×106821343² = 22821598640647298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106821349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53410671 + 53410672.

It is an arithmetic number, because the mean of its divisors is an integer number (53410672).

Almost surely, 2^106821343 is an apocalyptic number.

106821343 is a deficient number, since it is larger than the sum of its proper divisors (1).

106821343 is an equidigital number, since it uses as much as digits as its factorization.

106821343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 106821343 is about 10335.4411129859. The cubic root of 106821343 is about 474.4815662227.

Adding to 106821343 its reverse (343128601), we get a palindrome (449949944).

The spelling of 106821343 in words is "one hundred six million, eight hundred twenty-one thousand, three hundred forty-three".