204142331 has 2 divisors, whose sum is σ = 204142332. Its totient is φ = 204142330.

The previous prime is 204142277. The next prime is 204142349. The reversal of 204142331 is 133241402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204142331 - 2²² = 199948027 is a prime.

It is a super-2 number, since 2×204142331² = 83348182612227122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (204142361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102071165 + 102071166.

It is an arithmetic number, because the mean of its divisors is an integer number (102071166).

Almost surely, 2^204142331 is an apocalyptic number.

204142331 is a deficient number, since it is larger than the sum of its proper divisors (1).

204142331 is an equidigital number, since it uses as much as digits as its factorization.

204142331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 204142331 is about 14287.8385699167. The cubic root of 204142331 is about 588.8134065918.

Adding to 204142331 its reverse (133241402), we get a palindrome (337383733).

The spelling of 204142331 in words is "two hundred four million, one hundred forty-two thousand, three hundred thirty-one".