164823231 has 4 divisors (see below), whose sum is σ = 219764312. Its totient is φ = 109882152.

The previous prime is 164823229. The next prime is 164823247. The reversal of 164823231 is 132328461.

164823231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132328461 = 3 ⋅44109487.

It is not a de Polignac number, because 164823231 - 2¹ = 164823229 is a prime.

It is a super-2 number, since 2×164823231² = 54333394954558722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164828231) 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, 27470536 + ... + 27470541.

It is an arithmetic number, because the mean of its divisors is an integer number (54941078).

Almost surely, 2^164823231 is an apocalyptic number.

164823231 is a deficient number, since it is larger than the sum of its proper divisors (54941081).

164823231 is an equidigital number, since it uses as much as digits as its factorization.

164823231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54941080.

The product of its digits is 6912, while the sum is 30.

The square root of 164823231 is about 12838.3500108075. The cubic root of 164823231 is about 548.2847178274.

The spelling of 164823231 in words is "one hundred sixty-four million, eight hundred twenty-three thousand, two hundred thirty-one".