164840311 has 2 divisors, whose sum is σ = 164840312. Its totient is φ = 164840310.

The previous prime is 164840309. The next prime is 164840323. The reversal of 164840311 is 113048461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164840311 - 2¹ = 164840309 is a prime.

Together with 164840309, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 164840311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164840411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82420155 + 82420156.

It is an arithmetic number, because the mean of its divisors is an integer number (82420156).

Almost surely, 2^164840311 is an apocalyptic number.

164840311 is a deficient number, since it is larger than the sum of its proper divisors (1).

164840311 is an equidigital number, since it uses as much as digits as its factorization.

164840311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 164840311 is about 12839.0151880898. The cubic root of 164840311 is about 548.3036560549.

Adding to 164840311 its reverse (113048461), we get a palindrome (277888772).

The spelling of 164840311 in words is "one hundred sixty-four million, eight hundred forty thousand, three hundred eleven".