113515230217 has 2 divisors, whose sum is σ = 113515230218. Its totient is φ = 113515230216.

The previous prime is 113515230121. The next prime is 113515230229. The reversal of 113515230217 is 712032515311.

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., 101467094521 + 12048135696 = 318539^2 + 109764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113515230217 is a prime.

It is not a weakly prime, because it can be changed into another prime (113515230247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56757615108 + 56757615109.

It is an arithmetic number, because the mean of its divisors is an integer number (56757615109).

Almost surely, 2^113515230217 is an apocalyptic number.

It is an amenable number.

113515230217 is a deficient number, since it is larger than the sum of its proper divisors (1).

113515230217 is an equidigital number, since it uses as much as digits as its factorization.

113515230217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

Adding to 113515230217 its reverse (712032515311), we get a palindrome (825547745528).

The spelling of 113515230217 in words is "one hundred thirteen billion, five hundred fifteen million, two hundred thirty thousand, two hundred seventeen".