204293431 has 2 divisors, whose sum is σ = 204293432. Its totient is φ = 204293430.

The previous prime is 204293423. The next prime is 204293449. The reversal of 204293431 is 134392402.

204293431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204293431 - 2³ = 204293423 is a prime.

It is a super-2 number, since 2×204293431² = 83471611899503522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204293431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204296431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102146715 + 102146716.

It is an arithmetic number, because the mean of its divisors is an integer number (102146716).

Almost surely, 2^204293431 is an apocalyptic number.

204293431 is a deficient number, since it is larger than the sum of its proper divisors (1).

204293431 is an equidigital number, since it uses as much as digits as its factorization.

204293431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 204293431 is about 14293.1253055446. The cubic root of 204293431 is about 588.9586447424.

The spelling of 204293431 in words is "two hundred four million, two hundred ninety-three thousand, four hundred thirty-one".