207307161 has 8 divisors (see below), whose sum is σ = 307121760. Its totient is φ = 138204756.

The previous prime is 207307159. The next prime is 207307181. The reversal of 207307161 is 161703702.

It is not a de Polignac number, because 207307161 - 2¹ = 207307159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7678043 = 207307161 / (2 + 0 + 7 + 3 + 0 + 7 + 1 + 6 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (207307151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3838995 + ... + 3839048.

It is an arithmetic number, because the mean of its divisors is an integer number (38390220).

Almost surely, 2^207307161 is an apocalyptic number.

It is an amenable number.

207307161 is a deficient number, since it is larger than the sum of its proper divisors (99814599).

207307161 is an equidigital number, since it uses as much as digits as its factorization.

207307161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7678052 (or 7678046 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 207307161 is about 14398.1651956074. The cubic root of 207307161 is about 591.8406188077.

The spelling of 207307161 in words is "two hundred seven million, three hundred seven thousand, one hundred sixty-one".