164435231 has 4 divisors (see below), whose sum is σ = 164463432. Its totient is φ = 164407032.

The previous prime is 164435213. The next prime is 164435251. The reversal of 164435231 is 132534461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132534461 = 4967 ⋅26683.

It is a cyclic number.

It is not a de Polignac number, because 164435231 - 2¹⁴ = 164418847 is a prime.

It is a super-3 number, since 3×164435231³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164435194 and 164435203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164435251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1745 + ... + 18218.

It is an arithmetic number, because the mean of its divisors is an integer number (41115858).

Almost surely, 2^164435231 is an apocalyptic number.

164435231 is a deficient number, since it is larger than the sum of its proper divisors (28201).

164435231 is an equidigital number, since it uses as much as digits as its factorization.

164435231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28200.

The product of its digits is 8640, while the sum is 29.

The square root of 164435231 is about 12823.2301312891. The cubic root of 164435231 is about 547.8541522731.

Adding to 164435231 its reverse (132534461), we get a palindrome (296969692).

The spelling of 164435231 in words is "one hundred sixty-four million, four hundred thirty-five thousand, two hundred thirty-one".