204307231 has 2 divisors, whose sum is σ = 204307232. Its totient is φ = 204307230.

The previous prime is 204307211. The next prime is 204307249. The reversal of 204307231 is 132703402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204307231 - 2²¹ = 202210079 is a prime.

It is a super-2 number, since 2×204307231² = 83482889277774722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204307211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102153615 + 102153616.

It is an arithmetic number, because the mean of its divisors is an integer number (102153616).

Almost surely, 2^204307231 is an apocalyptic number.

204307231 is a deficient number, since it is larger than the sum of its proper divisors (1).

204307231 is an equidigital number, since it uses as much as digits as its factorization.

204307231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 204307231 is about 14293.6080469558. The cubic root of 204307231 is about 588.9719058089.

The spelling of 204307231 in words is "two hundred four million, three hundred seven thousand, two hundred thirty-one".