531226561603 has 2 divisors, whose sum is σ = 531226561604. Its totient is φ = 531226561602.

The previous prime is 531226561531. The next prime is 531226561633. The reversal of 531226561603 is 306165622135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531226561603 - 2¹³ = 531226553411 is a prime.

It is not a weakly prime, because it can be changed into another prime (531226561633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265613280801 + 265613280802.

It is an arithmetic number, because the mean of its divisors is an integer number (265613280802).

Almost surely, 2^531226561603 is an apocalyptic number.

531226561603 is a deficient number, since it is larger than the sum of its proper divisors (1).

531226561603 is an equidigital number, since it uses as much as digits as its factorization.

531226561603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 531226561603 in words is "five hundred thirty-one billion, two hundred twenty-six million, five hundred sixty-one thousand, six hundred three".