231223064 has 32 divisors (see below), whose sum is σ = 446433120. Its totient is φ = 112190976.

The previous prime is 231223063. The next prime is 231223081. The reversal of 231223064 is 460322132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231223063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148112 + ... + 149664.

It is an arithmetic number, because the mean of its divisors is an integer number (13951035).

Almost surely, 2^231223064 is an apocalyptic number.

It is an amenable number.

231223064 is a deficient number, since it is larger than the sum of its proper divisors (215210056).

231223064 is a wasteful number, since it uses less digits than its factorization.

231223064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 231223064 is about 15206.0206497295. The cubic root of 231223064 is about 613.7766803428.

Adding to 231223064 its reverse (460322132), we get a palindrome (691545196).

The spelling of 231223064 in words is "two hundred thirty-one million, two hundred twenty-three thousand, sixty-four".