1175312161 has 2 divisors, whose sum is σ = 1175312162. Its totient is φ = 1175312160.

The previous prime is 1175312123. The next prime is 1175312189. The reversal of 1175312161 is 1612135711.

It is an a-pointer prime, because the next prime (1175312189) can be obtained adding 1175312161 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603193600 + 572118561 = 24560^2 + 23919^2 .

It is a cyclic number.

It is not a de Polignac number, because 1175312161 - 2¹⁷ = 1175181089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1175312111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 587656080 + 587656081.

It is an arithmetic number, because the mean of its divisors is an integer number (587656081).

Almost surely, 2^1175312161 is an apocalyptic number.

It is an amenable number.

1175312161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1175312161 is an equidigital number, since it uses as much as digits as its factorization.

1175312161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 28.

The square root of 1175312161 is about 34282.8260357865. The cubic root of 1175312161 is about 1055.3205859955.

Adding to 1175312161 its reverse (1612135711), we get a palindrome (2787447872).

The spelling of 1175312161 in words is "one billion, one hundred seventy-five million, three hundred twelve thousand, one hundred sixty-one".