20343212 has 6 divisors (see below), whose sum is σ = 35600628. Its totient is φ = 10171604.

The previous prime is 20343209. The next prime is 20343227. The reversal of 20343212 is 21234302.

It is a plaindrome in base 16.

It is an unprimeable number.

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, 2542898 + ... + 2542905.

It is an arithmetic number, because the mean of its divisors is an integer number (5933438).

Almost surely, 2^20343212 is an apocalyptic number.

It is an amenable number.

20343212 is a deficient number, since it is larger than the sum of its proper divisors (15257416).

20343212 is a wasteful number, since it uses less digits than its factorization.

20343212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085807 (or 5085805 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20343212 is about 4510.3449978910. The cubic root of 20343212 is about 272.9856647824.

Adding to 20343212 its reverse (21234302), we get a palindrome (41577514).

The spelling of 20343212 in words is "twenty million, three hundred forty-three thousand, two hundred twelve".