204440531 has 2 divisors, whose sum is σ = 204440532. Its totient is φ = 204440530.

The previous prime is 204440527. The next prime is 204440539. The reversal of 204440531 is 135044402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204440531 - 2² = 204440527 is a prime.

It is a super-2 number, since 2×204440531² = 83591861431123922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204440497 and 204440506.

It is not a weakly prime, because it can be changed into another prime (204440539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102220265 + 102220266.

It is an arithmetic number, because the mean of its divisors is an integer number (102220266).

Almost surely, 2^204440531 is an apocalyptic number.

204440531 is a deficient number, since it is larger than the sum of its proper divisors (1).

204440531 is an equidigital number, since it uses as much as digits as its factorization.

204440531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 204440531 is about 14298.2702100639. The cubic root of 204440531 is about 589.0999692916.

Adding to 204440531 its reverse (135044402), we get a palindrome (339484933).

The spelling of 204440531 in words is "two hundred four million, four hundred forty thousand, five hundred thirty-one".