161031163 has 2 divisors, whose sum is σ = 161031164. Its totient is φ = 161031162.

The previous prime is 161031131. The next prime is 161031179. The reversal of 161031163 is 361130161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161031163 - 2⁵ = 161031131 is a prime.

It is not a weakly prime, because it can be changed into another prime (161031103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80515581 + 80515582.

It is an arithmetic number, because the mean of its divisors is an integer number (80515582).

Almost surely, 2^161031163 is an apocalyptic number.

161031163 is a deficient number, since it is larger than the sum of its proper divisors (1).

161031163 is an equidigital number, since it uses as much as digits as its factorization.

161031163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 161031163 is about 12689.8054752624. The cubic root of 161031163 is about 544.0472797629.

The spelling of 161031163 in words is "one hundred sixty-one million, thirty-one thousand, one hundred sixty-three".