164136331 has 4 divisors (see below), whose sum is σ = 164189272. Its totient is φ = 164083392.

The previous prime is 164136311. The next prime is 164136337. The reversal of 164136331 is 133631461.

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

It is a cyclic number.

It is not a de Polignac number, because 164136331 - 2²³ = 155747723 is a prime.

It is a super-2 number, since 2×164136331² = 53881470308283122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164136331.

It is not an unprimeable number, because it can be changed into a prime (164136337) 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, 21510 + ... + 28123.

It is an arithmetic number, because the mean of its divisors is an integer number (41047318).

Almost surely, 2^164136331 is an apocalyptic number.

164136331 is a deficient number, since it is larger than the sum of its proper divisors (52941).

164136331 is an equidigital number, since it uses as much as digits as its factorization.

164136331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52940.

The product of its digits is 3888, while the sum is 28.

The square root of 164136331 is about 12811.5702004087. The cubic root of 164136331 is about 547.5219993523.

Adding to 164136331 its reverse (133631461), we get a palindrome (297767792).

The spelling of 164136331 in words is "one hundred sixty-four million, one hundred thirty-six thousand, three hundred thirty-one".