2131710197 has 2 divisors, whose sum is σ = 2131710198. Its totient is φ = 2131710196.

The previous prime is 2131710181. The next prime is 2131710199. The reversal of 2131710197 is 7910171312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1826194756 + 305515441 = 42734^2 + 17479^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131710197 - 2⁴ = 2131710181 is a prime.

Together with 2131710199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131710199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065855098 + 1065855099.

It is an arithmetic number, because the mean of its divisors is an integer number (1065855099).

Almost surely, 2^2131710197 is an apocalyptic number.

It is an amenable number.

2131710197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131710197 is an equidigital number, since it uses as much as digits as its factorization.

2131710197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 32.

The square root of 2131710197 is about 46170.4472254710. The cubic root of 2131710197 is about 1286.9926131173.

The spelling of 2131710197 in words is "two billion, one hundred thirty-one million, seven hundred ten thousand, one hundred ninety-seven".