531117169903 has 2 divisors, whose sum is σ = 531117169904. Its totient is φ = 531117169902.

The previous prime is 531117169873. The next prime is 531117169943. The reversal of 531117169903 is 309961711135.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531117169903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531117169943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265558584951 + 265558584952.

It is an arithmetic number, because the mean of its divisors is an integer number (265558584952).

Almost surely, 2^531117169903 is an apocalyptic number.

531117169903 is a deficient number, since it is larger than the sum of its proper divisors (1).

531117169903 is an equidigital number, since it uses as much as digits as its factorization.

531117169903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153090, while the sum is 46.

The spelling of 531117169903 in words is "five hundred thirty-one billion, one hundred seventeen million, one hundred sixty-nine thousand, nine hundred three".