161623302 has 32 divisors (see below), whose sum is σ = 330860160. Its totient is φ = 52617600.

The previous prime is 161623249. The next prime is 161623307. The reversal of 161623302 is 203326161.

It is a happy number.

It is a super-2 number, since 2×161623302² = 52244183498766408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161623307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56302 + ... + 59102.

It is an arithmetic number, because the mean of its divisors is an integer number (10339380).

Almost surely, 2^161623302 is an apocalyptic number.

161623302 is an abundant number, since it is smaller than the sum of its proper divisors (169236858).

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

161623302 is a wasteful number, since it uses less digits than its factorization.

161623302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 161623302 is about 12713.1153538383. The cubic root of 161623302 is about 544.7133155416.

Adding to 161623302 its reverse (203326161), we get a palindrome (364949463).

The spelling of 161623302 in words is "one hundred sixty-one million, six hundred twenty-three thousand, three hundred two".