231202310117 has 2 divisors, whose sum is σ = 231202310118. Its totient is φ = 231202310116.

The previous prime is 231202310081. The next prime is 231202310123. The reversal of 231202310117 is 711013202132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115851056161 + 115351253956 = 340369^2 + 339634^2 .

It is a cyclic number.

It is not a de Polignac number, because 231202310117 - 2³² = 226907342821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231202310092 and 231202310101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231202310617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115601155058 + 115601155059.

It is an arithmetic number, because the mean of its divisors is an integer number (115601155059).

Almost surely, 2^231202310117 is an apocalyptic number.

It is an amenable number.

231202310117 is a deficient number, since it is larger than the sum of its proper divisors (1).

231202310117 is an equidigital number, since it uses as much as digits as its factorization.

231202310117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 231202310117 its reverse (711013202132), we get a palindrome (942215512249).

The spelling of 231202310117 in words is "two hundred thirty-one billion, two hundred two million, three hundred ten thousand, one hundred seventeen".