21343108 has 6 divisors (see below), whose sum is σ = 37350446. Its totient is φ = 10671552.

The previous prime is 21343039. The next prime is 21343111. The reversal of 21343108 is 80134312.

It can be written as a sum of positive squares in only one way, i.e., 18679684 + 2663424 = 4322^2 + 1632^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2667885 + ... + 2667892.

Almost surely, 2^21343108 is an apocalyptic number.

It is an amenable number.

21343108 is a deficient number, since it is larger than the sum of its proper divisors (16007338).

21343108 is a wasteful number, since it uses less digits than its factorization.

21343108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335781 (or 5335779 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 21343108 is about 4619.8601710441. The cubic root of 21343108 is about 277.3868618684.

The spelling of 21343108 in words is "twenty-one million, three hundred forty-three thousand, one hundred eight".