204442531 has 2 divisors, whose sum is σ = 204442532. Its totient is φ = 204442530.

The previous prime is 204442519. The next prime is 204442541. The reversal of 204442531 is 135244402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204442531 - 2⁵ = 204442499 is a prime.

It is a super-2 number, since 2×204442531² = 83593496963371922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204442496 and 204442505.

It is not a weakly prime, because it can be changed into another prime (204442541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102221265 + 102221266.

It is an arithmetic number, because the mean of its divisors is an integer number (102221266).

Almost surely, 2^204442531 is an apocalyptic number.

204442531 is a deficient number, since it is larger than the sum of its proper divisors (1).

204442531 is an equidigital number, since it uses as much as digits as its factorization.

204442531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 204442531 is about 14298.3401484228. The cubic root of 204442531 is about 589.1018903003.

Adding to 204442531 its reverse (135244402), we get a palindrome (339686933).

The spelling of 204442531 in words is "two hundred four million, four hundred forty-two thousand, five hundred thirty-one".