164747231 has 8 divisors (see below), whose sum is σ = 185922000. Its totient is φ = 144605440.

The previous prime is 164747227. The next prime is 164747239. The reversal of 164747231 is 132747461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164747231 - 2² = 164747227 is a prime.

It is a super-2 number, since 2×164747231² = 54283300244334722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164747191 and 164747200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164747239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257906 + ... + 258543.

It is an arithmetic number, because the mean of its divisors is an integer number (23240250).

Almost surely, 2^164747231 is an apocalyptic number.

164747231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

164747231 is a deficient number, since it is larger than the sum of its proper divisors (21174769).

164747231 is a wasteful number, since it uses less digits than its factorization.

164747231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516489.

The product of its digits is 28224, while the sum is 35.

The square root of 164747231 is about 12835.3897876146. The cubic root of 164747231 is about 548.2004335014.

The spelling of 164747231 in words is "one hundred sixty-four million, seven hundred forty-seven thousand, two hundred thirty-one".