231330320320 has 112 divisors (see below), whose sum is σ = 606768334848. Its totient is φ = 83303285760.

The previous prime is 231330320269. The next prime is 231330320359. The reversal of 231330320320 is 23023033132.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 231330320291 and 231330320300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43537 + ... + 681583.

Almost surely, 2^231330320320 is an apocalyptic number.

231330320320 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 231330320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303384167424).

231330320320 is an abundant number, since it is smaller than the sum of its proper divisors (375438014528).

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

231330320320 is a wasteful number, since it uses less digits than its factorization.

231330320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638178 (or 638168 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 231330320320 its reverse (23023033132), we get a palindrome (254353353452).

The spelling of 231330320320 in words is "two hundred thirty-one billion, three hundred thirty million, three hundred twenty thousand, three hundred twenty".