20204312 has 32 divisors (see below), whose sum is σ = 39381120. Its totient is φ = 9707520.

The previous prime is 20204311. The next prime is 20204323. The reversal of 20204312 is 21340202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63578 + ... + 63894.

It is an arithmetic number, because the mean of its divisors is an integer number (1230660).

Almost surely, 2^20204312 is an apocalyptic number.

It is an amenable number.

20204312 is a deficient number, since it is larger than the sum of its proper divisors (19176808).

20204312 is a wasteful number, since it uses less digits than its factorization.

20204312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20204312 is about 4494.9206889555. The cubic root of 20204312 is about 272.3629454162.

Adding to 20204312 its reverse (21340202), we get a palindrome (41544514).

The spelling of 20204312 in words is "twenty million, two hundred four thousand, three hundred twelve".