161314432 has 16 divisors (see below), whose sum is σ = 321368850. Its totient is φ = 80657152.

The previous prime is 161314423. The next prime is 161314477. The reversal of 161314432 is 234413161.

It can be written as a sum of positive squares in only one way, i.e., 137733696 + 23580736 = 11736^2 + 4856^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-3 number, since 3×161314432³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161314397 and 161314406.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 630007 + ... + 630262.

Almost surely, 2^161314432 is an apocalyptic number.

It is an amenable number.

161314432 is a deficient number, since it is larger than the sum of its proper divisors (160054418).

161314432 is an equidigital number, since it uses as much as digits as its factorization.

161314432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260283 (or 1260271 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 161314432 is about 12700.9618533401. The cubic root of 161314432 is about 544.3661030444.

Adding to 161314432 its reverse (234413161), we get a palindrome (395727593).

The spelling of 161314432 in words is "one hundred sixty-one million, three hundred fourteen thousand, four hundred thirty-two".