161216130 has 32 divisors (see below), whose sum is σ = 388022400. Its totient is φ = 42868352.

The previous prime is 161216119. The next prime is 161216149. The reversal of 161216130 is 31612161.

161216130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 161216097 and 161216106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3286 + ... + 18254.

It is an arithmetic number, because the mean of its divisors is an integer number (12125700).

Almost surely, 2^161216130 is an apocalyptic number.

161216130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161216130 is an abundant number, since it is smaller than the sum of its proper divisors (226806270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161216130 is a wasteful number, since it uses less digits than its factorization.

161216130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15338.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 161216130 is about 12697.0913992142. The cubic root of 161216130 is about 544.2555050661.

Adding to 161216130 its reverse (31612161), we get a palindrome (192828291).

The spelling of 161216130 in words is "one hundred sixty-one million, two hundred sixteen thousand, one hundred thirty".