204311453 has 4 divisors (see below), whose sum is σ = 206185980. Its totient is φ = 202436928.

The previous prime is 204311431. The next prime is 204311539. The reversal of 204311453 is 354113402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 186104164 + 18207289 = 13642^2 + 4267^2 .

It is a cyclic number.

It is not a de Polignac number, because 204311453 - 2¹⁸ = 204049309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204311053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937100 + ... + 937317.

It is an arithmetic number, because the mean of its divisors is an integer number (51546495).

Almost surely, 2^204311453 is an apocalyptic number.

It is an amenable number.

204311453 is a deficient number, since it is larger than the sum of its proper divisors (1874527).

204311453 is a wasteful number, since it uses less digits than its factorization.

204311453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874526.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 204311453 is about 14293.7557345856. The cubic root of 204311453 is about 588.9759628072.

Adding to 204311453 its reverse (354113402), we get a palindrome (558424855).

The spelling of 204311453 in words is "two hundred four million, three hundred eleven thousand, four hundred fifty-three".