20204313 has 16 divisors (see below), whose sum is σ = 29134080. Its totient is φ = 12406016.

The previous prime is 20204311. The next prime is 20204323. The reversal of 20204313 is 31340202.

It is a cyclic number.

It is not a de Polignac number, because 20204313 - 2¹ = 20204311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20204292 and 20204301.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1818 + ... + 6611.

It is an arithmetic number, because the mean of its divisors is an integer number (1820880).

Almost surely, 2^20204313 is an apocalyptic number.

It is an amenable number.

20204313 is a deficient number, since it is larger than the sum of its proper divisors (8929767).

20204313 is a wasteful number, since it uses less digits than its factorization.

20204313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8496.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20204313 is about 4494.9208001921. The cubic root of 20204313 is about 272.3629499097.

Adding to 20204313 its reverse (31340202), we get a palindrome (51544515).

The spelling of 20204313 in words is "twenty million, two hundred four thousand, three hundred thirteen".