162131797 has 2 divisors, whose sum is σ = 162131798. Its totient is φ = 162131796.

The previous prime is 162131777. The next prime is 162131813. The reversal of 162131797 is 797131261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153611236 + 8520561 = 12394^2 + 2919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162131797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162131747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81065898 + 81065899.

It is an arithmetic number, because the mean of its divisors is an integer number (81065899).

Almost surely, 2^162131797 is an apocalyptic number.

It is an amenable number.

162131797 is a deficient number, since it is larger than the sum of its proper divisors (1).

162131797 is an equidigital number, since it uses as much as digits as its factorization.

162131797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 37.

The square root of 162131797 is about 12733.0984838727. The cubic root of 162131797 is about 545.2839717541.

The spelling of 162131797 in words is "one hundred sixty-two million, one hundred thirty-one thousand, seven hundred ninety-seven".