204480823 has 2 divisors, whose sum is σ = 204480824. Its totient is φ = 204480822.

The previous prime is 204480821. The next prime is 204480841. The reversal of 204480823 is 328084402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204480823 - 2¹ = 204480821 is a prime.

Together with 204480821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204480821) 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 as a sum of consecutive naturals, namely, 102240411 + 102240412.

It is an arithmetic number, because the mean of its divisors is an integer number (102240412).

Almost surely, 2^204480823 is an apocalyptic number.

204480823 is the 7644-th centered heptagonal number.

204480823 is a deficient number, since it is larger than the sum of its proper divisors (1).

204480823 is an equidigital number, since it uses as much as digits as its factorization.

204480823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 204480823 is about 14299.6791222740. The cubic root of 204480823 is about 589.1386675163.

The spelling of 204480823 in words is "two hundred four million, four hundred eighty thousand, eight hundred twenty-three".