161703361 has 4 divisors (see below), whose sum is σ = 164116912. Its totient is φ = 159289812.

The previous prime is 161703341. The next prime is 161703379. The reversal of 161703361 is 163307161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161703361 - 2⁵ = 161703329 is a prime.

It is a super-2 number, since 2×161703361² = 52295953917392642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161703301) 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 3 ways as a sum of consecutive naturals, for example, 1206675 + ... + 1206808.

It is an arithmetic number, because the mean of its divisors is an integer number (41029228).

Almost surely, 2^161703361 is an apocalyptic number.

It is an amenable number.

161703361 is a deficient number, since it is larger than the sum of its proper divisors (2413551).

161703361 is an equidigital number, since it uses as much as digits as its factorization.

161703361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413550.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 161703361 is about 12716.2636414947. The cubic root of 161703361 is about 544.8032407035.

The spelling of 161703361 in words is "one hundred sixty-one million, seven hundred three thousand, three hundred sixty-one".