32161131 has 10 divisors (see below), whose sum is σ = 48043292. Its totient is φ = 21440700.

The previous prime is 32161117. The next prime is 32161141. The reversal of 32161131 is 13116123.

32161131 is a `hidden beast` number, since 3 + 21 + 611 + 31 = 666.

It is not a de Polignac number, because 32161131 - 2¹⁵ = 32128363 is a prime.

It is a super-2 number, since 2×32161131² = 2068676694398322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32161111) 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 9 ways as a sum of consecutive naturals, for example, 198445 + ... + 198606.

Almost surely, 2^32161131 is an apocalyptic number.

32161131 is a deficient number, since it is larger than the sum of its proper divisors (15882161).

32161131 is an equidigital number, since it uses as much as digits as its factorization.

32161131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397063 (or 397054 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 32161131 is about 5671.0784688629. The cubic root of 32161131 is about 318.0121924837.

Adding to 32161131 its reverse (13116123), we get a palindrome (45277254).

The spelling of 32161131 in words is "thirty-two million, one hundred sixty-one thousand, one hundred thirty-one".