132161231 has 4 divisors (see below), whose sum is σ = 135234792. Its totient is φ = 129087672.

The previous prime is 132161221. The next prime is 132161251.

132161231 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 132161231 - 2¹⁸ = 131899087 is a prime.

It is a super-2 number, since 2×132161231² = 34933181958870722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132161221) 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 3 ways as a sum of consecutive naturals, for example, 1536716 + ... + 1536801.

It is an arithmetic number, because the mean of its divisors is an integer number (33808698).

Almost surely, 2^132161231 is an apocalyptic number.

132161231 is a deficient number, since it is larger than the sum of its proper divisors (3073561).

132161231 is an equidigital number, since it uses as much as digits as its factorization.

132161231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073560.

The product of its digits is 216, while the sum is 20.

The square root of 132161231 is about 11496.1398303952. The cubic root of 132161231 is about 509.3715583643.

The spelling of 132161231 in words is "one hundred thirty-two million, one hundred sixty-one thousand, two hundred thirty-one".