167656397231 has 2 divisors, whose sum is σ = 167656397232. Its totient is φ = 167656397230.

The previous prime is 167656397213. The next prime is 167656397263. The reversal of 167656397231 is 132793656761.

167656397231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (167656397213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 167656397231 - 2³⁴ = 150476528047 is a prime.

It is a super-2 number, since 2×167656397231² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167656397281) 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, 83828198615 + 83828198616.

It is an arithmetic number, because the mean of its divisors is an integer number (83828198616).

Almost surely, 2^167656397231 is an apocalyptic number.

167656397231 is a deficient number, since it is larger than the sum of its proper divisors (1).

167656397231 is an equidigital number, since it uses as much as digits as its factorization.

167656397231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 56.

The spelling of 167656397231 in words is "one hundred sixty-seven billion, six hundred fifty-six million, three hundred ninety-seven thousand, two hundred thirty-one".