20311204 has 12 divisors (see below), whose sum is σ = 35613424. Its totient is φ = 10135944.

The previous prime is 20311189. The next prime is 20311211. The reversal of 20311204 is 40211302.

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 in 3 ways as a sum of consecutive naturals, for example, 2454 + ... + 6829.

Almost surely, 2^20311204 is an apocalyptic number.

It is an amenable number.

20311204 is a deficient number, since it is larger than the sum of its proper divisors (15302220).

20311204 is a wasteful number, since it uses less digits than its factorization.

20311204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9834 (or 9832 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20311204 is about 4506.7953137457. The cubic root of 20311204 is about 272.8424177899.

Adding to 20311204 its reverse (40211302), we get a palindrome (60522506).

The spelling of 20311204 in words is "twenty million, three hundred eleven thousand, two hundred four".