164235321 has 12 divisors (see below), whose sum is σ = 237597360. Its totient is φ = 109320120.

The previous prime is 164235319. The next prime is 164235329. The reversal of 164235321 is 123532461.

It is not a de Polignac number, because 164235321 - 2¹ = 164235319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164235329) 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 11 ways as a sum of consecutive naturals, for example, 7915 + ... + 19776.

It is an arithmetic number, because the mean of its divisors is an integer number (19799780).

Almost surely, 2^164235321 is an apocalyptic number.

It is an amenable number.

164235321 is a deficient number, since it is larger than the sum of its proper divisors (73362039).

164235321 is a wasteful number, since it uses less digits than its factorization.

164235321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28356 (or 28353 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 164235321 is about 12815.4329228474. The cubic root of 164235321 is about 547.6320467141.

Adding to 164235321 its reverse (123532461), we get a palindrome (287767782).

It can be divided in two parts, 1642 and 35321, that added together give a palindrome (36963).

The spelling of 164235321 in words is "one hundred sixty-four million, two hundred thirty-five thousand, three hundred twenty-one".