531216163 has 2 divisors, whose sum is σ = 531216164. Its totient is φ = 531216162.

The previous prime is 531216157. The next prime is 531216167. The reversal of 531216163 is 361612135.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531216163 is a prime.

It is a super-2 number, since 2×531216163² = 564381223664885138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (531216167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265608081 + 265608082.

It is an arithmetic number, because the mean of its divisors is an integer number (265608082).

Almost surely, 2^531216163 is an apocalyptic number.

531216163 is a deficient number, since it is larger than the sum of its proper divisors (1).

531216163 is an equidigital number, since it uses as much as digits as its factorization.

531216163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 28.

The square root of 531216163 is about 23048.1271039536. The cubic root of 531216163 is about 809.8857548571.

Adding to 531216163 its reverse (361612135), we get a palindrome (892828298).

The spelling of 531216163 in words is "five hundred thirty-one million, two hundred sixteen thousand, one hundred sixty-three".