531041603 has 2 divisors, whose sum is σ = 531041604. Its totient is φ = 531041602.

The previous prime is 531041593. The next prime is 531041633. The reversal of 531041603 is 306140135.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531041603 - 2⁴ = 531041587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (531041633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265520801 + 265520802.

It is an arithmetic number, because the mean of its divisors is an integer number (265520802).

Almost surely, 2^531041603 is an apocalyptic number.

531041603 is a deficient number, since it is larger than the sum of its proper divisors (1).

531041603 is an equidigital number, since it uses as much as digits as its factorization.

531041603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 531041603 is about 23044.3399341357. The cubic root of 531041603 is about 809.7970344482.

Adding to 531041603 its reverse (306140135), we get a palindrome (837181738).

The spelling of 531041603 in words is "five hundred thirty-one million, forty-one thousand, six hundred three".