161031179 has 2 divisors, whose sum is σ = 161031180. Its totient is φ = 161031178.

The previous prime is 161031163. The next prime is 161031209. The reversal of 161031179 is 971130161.

It is a weak prime.

It is an emirp because it is prime and its reverse (971130161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161031179 - 2⁴ = 161031163 is a prime.

It is a super-2 number, since 2×161031179² = 51862081220260082, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161031109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80515589 + 80515590.

It is an arithmetic number, because the mean of its divisors is an integer number (80515590).

Almost surely, 2^161031179 is an apocalyptic number.

161031179 is a deficient number, since it is larger than the sum of its proper divisors (1).

161031179 is an equidigital number, since it uses as much as digits as its factorization.

161031179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 161031179 is about 12689.8061056897. The cubic root of 161031179 is about 544.0472977817.

The spelling of 161031179 in words is "one hundred sixty-one million, thirty-one thousand, one hundred seventy-nine".