267312161 has 8 divisors (see below), whose sum is σ = 276130344. Its totient is φ = 258577920.

The previous prime is 267312119. The next prime is 267312167. The reversal of 267312161 is 161213762.

It can be written as a sum of positive squares in 4 ways, for example, as 55056400 + 212255761 = 7420^2 + 14569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-267312161 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (267312167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14480 + ... + 27281.

It is an arithmetic number, because the mean of its divisors is an integer number (34516293).

Almost surely, 2^267312161 is an apocalyptic number.

It is an amenable number.

267312161 is a deficient number, since it is larger than the sum of its proper divisors (8818183).

267312161 is a wasteful number, since it uses less digits than its factorization.

267312161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41971.

The product of its digits is 3024, while the sum is 29.

The square root of 267312161 is about 16349.6838195728. The cubic root of 267312161 is about 644.1785195265.

The spelling of 267312161 in words is "two hundred sixty-seven million, three hundred twelve thousand, one hundred sixty-one".