164242313 has 4 divisors (see below), whose sum is σ = 165441300. Its totient is φ = 163043328.

The previous prime is 164242279. The next prime is 164242339. The reversal of 164242313 is 313242461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35010889 + 129231424 = 5917^2 + 11368^2 .

It is a cyclic number.

It is not a de Polignac number, because 164242313 - 2¹⁰ = 164241289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164242363) 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, 599288 + ... + 599561.

It is an arithmetic number, because the mean of its divisors is an integer number (41360325).

Almost surely, 2^164242313 is an apocalyptic number.

It is an amenable number.

164242313 is a deficient number, since it is larger than the sum of its proper divisors (1198987).

164242313 is a wasteful number, since it uses less digits than its factorization.

164242313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198986.

The product of its digits is 3456, while the sum is 26.

The square root of 164242313 is about 12815.7057160345. The cubic root of 164242313 is about 547.6398180609.

Adding to 164242313 its reverse (313242461), we get a palindrome (477484774).

The spelling of 164242313 in words is "one hundred sixty-four million, two hundred forty-two thousand, three hundred thirteen".