164380231 has 4 divisors (see below), whose sum is σ = 164410200. Its totient is φ = 164350264.

The previous prime is 164380217. The next prime is 164380243. The reversal of 164380231 is 132083461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132083461 = 83 ⋅1591367.

It is a cyclic number.

It is not a de Polignac number, because 164380231 - 2¹¹ = 164378183 is a prime.

It is a super-2 number, since 2×164380231² = 54041720687226722, 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 164380231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164380331) 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, 4141 + ... + 18598.

It is an arithmetic number, because the mean of its divisors is an integer number (41102550).

Almost surely, 2^164380231 is an apocalyptic number.

164380231 is a deficient number, since it is larger than the sum of its proper divisors (29969).

164380231 is an equidigital number, since it uses as much as digits as its factorization.

164380231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29968.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 164380231 is about 12821.0854064701. The cubic root of 164380231 is about 547.7930637048.

The spelling of 164380231 in words is "one hundred sixty-four million, three hundred eighty thousand, two hundred thirty-one".