161210323 has 8 divisors (see below), whose sum is σ = 168519680. Its totient is φ = 154032840.

The previous prime is 161210297. The next prime is 161210327. The reversal of 161210323 is 323012161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161210323 - 2¹³ = 161202131 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161210323.

It is not an unprimeable number, because it can be changed into a prime (161210327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30465 + ... + 35362.

It is an arithmetic number, because the mean of its divisors is an integer number (21064960).

Almost surely, 2^161210323 is an apocalyptic number.

161210323 is a deficient number, since it is larger than the sum of its proper divisors (7309357).

161210323 is an equidigital number, since it uses as much as digits as its factorization.

161210323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65937.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 161210323 is about 12696.8627227359. The cubic root of 161210323 is about 544.2489702988.

Adding to 161210323 its reverse (323012161), we get a palindrome (484222484).

It can be divided in two parts, 1612 and 10323, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 161210323 in words is "one hundred sixty-one million, two hundred ten thousand, three hundred twenty-three".