164035321 has 2 divisors, whose sum is σ = 164035322. Its totient is φ = 164035320.

The previous prime is 164035309. The next prime is 164035331. The reversal of 164035321 is 123530461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160275600 + 3759721 = 12660^2 + 1939^2 .

It is an emirp because it is prime and its reverse (123530461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164035321 is a prime.

It is not a weakly prime, because it can be changed into another prime (164035331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82017660 + 82017661.

It is an arithmetic number, because the mean of its divisors is an integer number (82017661).

Almost surely, 2^164035321 is an apocalyptic number.

It is an amenable number.

164035321 is a deficient number, since it is larger than the sum of its proper divisors (1).

164035321 is an equidigital number, since it uses as much as digits as its factorization.

164035321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 164035321 is about 12807.6274539823. The cubic root of 164035321 is about 547.4096607338.

Adding to 164035321 its reverse (123530461), we get a palindrome (287565782).

The spelling of 164035321 in words is "one hundred sixty-four million, thirty-five thousand, three hundred twenty-one".