204345131 has 2 divisors, whose sum is σ = 204345132. Its totient is φ = 204345130.

The previous prime is 204345121. The next prime is 204345161. The reversal of 204345131 is 131543402.

204345131 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 204345131 - 2²² = 200150827 is a prime.

It is a super-2 number, since 2×204345131² = 83513865126814322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204345097 and 204345106.

It is not a weakly prime, because it can be changed into another prime (204345101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102172565 + 102172566.

It is an arithmetic number, because the mean of its divisors is an integer number (102172566).

Almost surely, 2^204345131 is an apocalyptic number.

204345131 is a deficient number, since it is larger than the sum of its proper divisors (1).

204345131 is an equidigital number, since it uses as much as digits as its factorization.

204345131 is an evil number, because the sum of its binary digits is even.

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

The square root of 204345131 is about 14294.9337529070. The cubic root of 204345131 is about 589.0083226225.

Adding to 204345131 its reverse (131543402), we get a palindrome (335888533).

It can be divided in two parts, 2043 and 45131, that added together give a palindrome (47174).

The spelling of 204345131 in words is "two hundred four million, three hundred forty-five thousand, one hundred thirty-one".