86312197 has 2 divisors, whose sum is σ = 86312198. Its totient is φ = 86312196.

The previous prime is 86312183. The next prime is 86312251. The reversal of 86312197 is 79121368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84658401 + 1653796 = 9201^2 + 1286^2 .

It is a cyclic number.

It is not a de Polignac number, because 86312197 - 2¹¹ = 86310149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86310197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43156098 + 43156099.

It is an arithmetic number, because the mean of its divisors is an integer number (43156099).

Almost surely, 2^86312197 is an apocalyptic number.

It is an amenable number.

86312197 is a deficient number, since it is larger than the sum of its proper divisors (1).

86312197 is an equidigital number, since it uses as much as digits as its factorization.

86312197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 86312197 is about 9290.4357809524. The cubic root of 86312197 is about 441.9339749047.

The spelling of 86312197 in words is "eighty-six million, three hundred twelve thousand, one hundred ninety-seven".