132831161 has 4 divisors (see below), whose sum is σ = 134006772. Its totient is φ = 131655552.

The previous prime is 132831143. The next prime is 132831173. The reversal of 132831161 is 161138231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161138231 = 47 ⋅3428473.

It can be written as a sum of positive squares in 2 ways, for example, as 72675625 + 60155536 = 8525^2 + 7756^2 .

It is a cyclic number.

It is not a de Polignac number, because 132831161 - 2¹⁴ = 132814777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 132831161.

It is not an unprimeable number, because it can be changed into a prime (132831661) 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 in 3 ways as a sum of consecutive naturals, for example, 587636 + ... + 587861.

It is an arithmetic number, because the mean of its divisors is an integer number (33501693).

Almost surely, 2^132831161 is an apocalyptic number.

132831161 is the 6161-st centered heptagonal number.

It is an amenable number.

132831161 is a deficient number, since it is larger than the sum of its proper divisors (1175611).

132831161 is a wasteful number, since it uses less digits than its factorization.

132831161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175610.

The product of its digits is 864, while the sum is 26.

The square root of 132831161 is about 11525.2401710333. The cubic root of 132831161 is about 510.2307823903.

Adding to 132831161 its reverse (161138231), we get a palindrome (293969392).

The spelling of 132831161 in words is "one hundred thirty-two million, eight hundred thirty-one thousand, one hundred sixty-one".