161032012 has 24 divisors (see below), whose sum is σ = 293776560. Its totient is φ = 77138880.

The previous prime is 161031991. The next prime is 161032013. The reversal of 161032012 is 210230161.

It is not an unprimeable number, because it can be changed into a prime (161032013) 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, 9898 + ... + 20494.

It is an arithmetic number, because the mean of its divisors is an integer number (12240690).

Almost surely, 2^161032012 is an apocalyptic number.

It is an amenable number.

161032012 is a deficient number, since it is larger than the sum of its proper divisors (132744548).

161032012 is a wasteful number, since it uses less digits than its factorization.

161032012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10761 (or 10759 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 161032012 is about 12689.8389272678. The cubic root of 161032012 is about 544.0482358829.

Adding to 161032012 its reverse (210230161), we get a palindrome (371262173).

The spelling of 161032012 in words is "one hundred sixty-one million, thirty-two thousand, twelve".