161313160 has 32 divisors (see below), whose sum is σ = 366557400. Its totient is φ = 63884800.

The previous prime is 161313151. The next prime is 161313161. The reversal of 161313160 is 61313161.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 147039876 + 14273284 = 12126^2 + 3778^2 .

It is not an unprimeable number, because it can be changed into a prime (161313161) 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, 15925 + ... + 24004.

Almost surely, 2^161313160 is an apocalyptic number.

161313160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161313160 is an abundant number, since it is smaller than the sum of its proper divisors (205244240).

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

161313160 is a wasteful number, since it uses less digits than its factorization.

161313160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40041 (or 40037 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 161313160 is about 12700.9117782937. The cubic root of 161313160 is about 544.3646722249.

Subtracting from 161313160 its reverse (61313161), we obtain a palindrome (99999999).

It can be divided in two parts, 16131 and 3160, that added together give a palindrome (19291).

The spelling of 161313160 in words is "one hundred sixty-one million, three hundred thirteen thousand, one hundred sixty".