204464431 has 2 divisors, whose sum is σ = 204464432. Its totient is φ = 204464430.

The previous prime is 204464399. The next prime is 204464443. The reversal of 204464431 is 134464402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204464431 - 2⁵ = 204464399 is a prime.

It is a super-3 number, since 3×204464431³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 204464431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204464461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102232215 + 102232216.

It is an arithmetic number, because the mean of its divisors is an integer number (102232216).

Almost surely, 2^204464431 is an apocalyptic number.

204464431 is a deficient number, since it is larger than the sum of its proper divisors (1).

204464431 is an equidigital number, since it uses as much as digits as its factorization.

204464431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 204464431 is about 14299.1059510726. The cubic root of 204464431 is about 589.1229245256.

The spelling of 204464431 in words is "two hundred four million, four hundred sixty-four thousand, four hundred thirty-one".