164231231 has 4 divisors (see below), whose sum is σ = 172875000. Its totient is φ = 155587464.

The previous prime is 164231213. The next prime is 164231267. The reversal of 164231231 is 132132461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132132461 = 739 ⋅178799.

It is a cyclic number.

It is not a de Polignac number, because 164231231 - 2¹⁸ = 163969087 is a prime.

It is a super-2 number, since 2×164231231² = 53943794471550722, 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 = 164231197 and 164231206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164236231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4321856 + ... + 4321893.

It is an arithmetic number, because the mean of its divisors is an integer number (43218750).

Almost surely, 2^164231231 is an apocalyptic number.

164231231 is a deficient number, since it is larger than the sum of its proper divisors (8643769).

164231231 is an equidigital number, since it uses as much as digits as its factorization.

164231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8643768.

The product of its digits is 864, while the sum is 23.

The square root of 164231231 is about 12815.2733486258. The cubic root of 164231231 is about 547.6275007296.

Adding to 164231231 its reverse (132132461), we get a palindrome (296363692).

The spelling of 164231231 in words is "one hundred sixty-four million, two hundred thirty-one thousand, two hundred thirty-one".