164205331 has 4 divisors (see below), whose sum is σ = 164259592. Its totient is φ = 164151072.

The previous prime is 164205299. The next prime is 164205341. The reversal of 164205331 is 133502461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164205331 - 2⁵ = 164205299 is a prime.

It is a super-2 number, since 2×164205331² = 53926781457639122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164205296 and 164205305.

It is not an unprimeable number, because it can be changed into a prime (164205341) 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, 22305 + ... + 28738.

It is an arithmetic number, because the mean of its divisors is an integer number (41064898).

Almost surely, 2^164205331 is an apocalyptic number.

164205331 is a deficient number, since it is larger than the sum of its proper divisors (54261).

164205331 is an equidigital number, since it uses as much as digits as its factorization.

164205331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54260.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 164205331 is about 12814.2627958069. The cubic root of 164205331 is about 547.5987114471.

Adding to 164205331 its reverse (133502461), we get a palindrome (297707792).

The spelling of 164205331 in words is "one hundred sixty-four million, two hundred five thousand, three hundred thirty-one".