11531123175017 has 2 divisors, whose sum is σ = 11531123175018. Its totient is φ = 11531123175016.

The previous prime is 11531123175007. The next prime is 11531123175023. The reversal of 11531123175017 is 71057132113511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11006808157801 + 524315017216 = 3317651^2 + 724096^2 .

It is a cyclic number.

It is not a de Polignac number, because 11531123175017 - 2¹⁶ = 11531123109481 is a prime.

It is not a weakly prime, because it can be changed into another prime (11531123175007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5765561587508 + 5765561587509.

It is an arithmetic number, because the mean of its divisors is an integer number (5765561587509).

Almost surely, 2^{11531123175017} is an apocalyptic number.

It is an amenable number.

11531123175017 is a deficient number, since it is larger than the sum of its proper divisors (1).

11531123175017 is an equidigital number, since it uses as much as digits as its factorization.

11531123175017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22050, while the sum is 38.

Adding to 11531123175017 its reverse (71057132113511), we get a palindrome (82588255288528).

The spelling of 11531123175017 in words is "eleven trillion, five hundred thirty-one billion, one hundred twenty-three million, one hundred seventy-five thousand, seventeen".