164003231 has 8 divisors (see below), whose sum is σ = 197297280. Its totient is φ = 133175448.

The previous prime is 164003221. The next prime is 164003243. The reversal of 164003231 is 132300461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164003231 - 2⁶ = 164003167 is a prime.

It is a super-2 number, since 2×164003231² = 53794119556878722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164003221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616421 + ... + 616686.

It is an arithmetic number, because the mean of its divisors is an integer number (24662160).

Almost surely, 2^164003231 is an apocalyptic number.

164003231 is a deficient number, since it is larger than the sum of its proper divisors (33294049).

164003231 is a wasteful number, since it uses less digits than its factorization.

164003231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233133.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 164003231 is about 12806.3746236005. The cubic root of 164003231 is about 547.3739620775.

Adding to 164003231 its reverse (132300461), we get a palindrome (296303692).

The spelling of 164003231 in words is "one hundred sixty-four million, three thousand, two hundred thirty-one".