20303212 has 12 divisors (see below), whose sum is σ = 35857360. Its totient is φ = 10058256.

The previous prime is 20303203. The next prime is 20303249. The reversal of 20303212 is 21230302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20303192 and 20303201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22848 + ... + 23719.

Almost surely, 2^20303212 is an apocalyptic number.

It is an amenable number.

20303212 is a deficient number, since it is larger than the sum of its proper divisors (15554148).

20303212 is a wasteful number, since it uses less digits than its factorization.

20303212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46680 (or 46678 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20303212 is about 4505.9085654283. The cubic root of 20303212 is about 272.8066273190.

Adding to 20303212 its reverse (21230302), we get a palindrome (41533514).

The spelling of 20303212 in words is "twenty million, three hundred three thousand, two hundred twelve".