20031204 has 24 divisors (see below), whose sum is σ = 46883200. Its totient is φ = 6656544.

The previous prime is 20031173. The next prime is 20031217. The reversal of 20031204 is 40213002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20031204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1797 + ... + 6579.

Almost surely, 2^20031204 is an apocalyptic number.

It is an amenable number.

20031204 is an abundant number, since it is smaller than the sum of its proper divisors (26851996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20031204 is a wasteful number, since it uses less digits than its factorization.

20031204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5139 (or 5137 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20031204 is about 4475.6233085460. The cubic root of 20031204 is about 271.5828561186.

Adding to 20031204 its reverse (40213002), we get a palindrome (60244206).

The spelling of 20031204 in words is "twenty million, thirty-one thousand, two hundred four".