231313101161 has 2 divisors, whose sum is σ = 231313101162. Its totient is φ = 231313101160.

The previous prime is 231313101101. The next prime is 231313101163. The reversal of 231313101161 is 161101313132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230995584400 + 317516761 = 480620^2 + 17819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231313101161 is a prime.

Together with 231313101163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231313101163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656550580 + 115656550581.

It is an arithmetic number, because the mean of its divisors is an integer number (115656550581).

Almost surely, 2^231313101161 is an apocalyptic number.

It is an amenable number.

231313101161 is a deficient number, since it is larger than the sum of its proper divisors (1).

231313101161 is an equidigital number, since it uses as much as digits as its factorization.

231313101161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 231313101161 its reverse (161101313132), we get a palindrome (392414414293).

The spelling of 231313101161 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred one thousand, one hundred sixty-one".