115310161 has 2 divisors, whose sum is σ = 115310162. Its totient is φ = 115310160.

The previous prime is 115310159. The next prime is 115310179. The reversal of 115310161 is 161013511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105267600 + 10042561 = 10260^2 + 3169^2 .

It is a cyclic number.

It is not a de Polignac number, because 115310161 - 2¹ = 115310159 is a prime.

Together with 115310159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (115310101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57655080 + 57655081.

It is an arithmetic number, because the mean of its divisors is an integer number (57655081).

Almost surely, 2^115310161 is an apocalyptic number.

It is an amenable number.

115310161 is a deficient number, since it is larger than the sum of its proper divisors (1).

115310161 is an equidigital number, since it uses as much as digits as its factorization.

115310161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 115310161 is about 10738.2568883409. The cubic root of 115310161 is about 486.7312077931.

Adding to 115310161 its reverse (161013511), we get a palindrome (276323672).

The spelling of 115310161 in words is "one hundred fifteen million, three hundred ten thousand, one hundred sixty-one".