231006320 has 40 divisors (see below), whose sum is σ = 549588336. Its totient is φ = 90252288.

The previous prime is 231006301. The next prime is 231006331. The reversal of 231006320 is 23600132.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30137 + ... + 37016.

Almost surely, 2^231006320 is an apocalyptic number.

231006320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231006320 is an abundant number, since it is smaller than the sum of its proper divisors (318582016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231006320 is a wasteful number, since it uses less digits than its factorization.

231006320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67209 (or 67203 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 231006320 is about 15198.8920648842. The cubic root of 231006320 is about 613.5848396162.

Adding to 231006320 its reverse (23600132), we get a palindrome (254606452).

The spelling of 231006320 in words is "two hundred thirty-one million, six thousand, three hundred twenty".