231664223 has 8 divisors (see below), whose sum is σ = 265329792. Its totient is φ = 198141336.

The previous prime is 231664217. The next prime is 231664229. The reversal of 231664223 is 322466132.

It is an interprime number because it is at equal distance from previous prime (231664217) and next prime (231664229).

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

It is a cyclic number.

It is not a de Polignac number, because 231664223 - 2⁶ = 231664159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231664229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32165 + ... + 38702.

It is an arithmetic number, because the mean of its divisors is an integer number (33166224).

Almost surely, 2^231664223 is an apocalyptic number.

231664223 is a deficient number, since it is larger than the sum of its proper divisors (33665569).

231664223 is an equidigital number, since it uses as much as digits as its factorization.

231664223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71341.

The product of its digits is 10368, while the sum is 29.

The square root of 231664223 is about 15220.5198005850. The cubic root of 231664223 is about 614.1667813966.

The spelling of 231664223 in words is "two hundred thirty-one million, six hundred sixty-four thousand, two hundred twenty-three".