231103320 has 256 divisors, whose sum is σ = 839808000. Its totient is φ = 49760256.

The previous prime is 231103307. The next prime is 231103343. The reversal of 231103320 is 23301132.

231103320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 231103320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1290991 + ... + 1291169.

It is an arithmetic number, because the mean of its divisors is an integer number (3280500).

Almost surely, 2^231103320 is an apocalyptic number.

231103320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231103320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (419904000).

231103320 is an abundant number, since it is smaller than the sum of its proper divisors (608704680).

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

231103320 is a wasteful number, since it uses less digits than its factorization.

231103320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 231103320 is about 15202.0827520442. The cubic root of 231103320 is about 613.6707094182.

Adding to 231103320 its reverse (23301132), we get a palindrome (254404452).

The spelling of 231103320 in words is "two hundred thirty-one million, one hundred three thousand, three hundred twenty".