231230313320 has 32 divisors (see below), whose sum is σ = 538208490600. Its totient is φ = 89302741248.

The previous prime is 231230313221. The next prime is 231230313323. The reversal of 231230313320 is 23313032132.

It can be written as a sum of positive squares in 4 ways, for example, as 150222907396 + 81007405924 = 387586^2 + 284618^2 .

It is not an unprimeable number, because it can be changed into a prime (231230313323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99667079 + ... + 99669398.

Almost surely, 2^231230313320 is an apocalyptic number.

231230313320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231230313320 is an abundant number, since it is smaller than the sum of its proper divisors (306978177280).

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

231230313320 is a wasteful number, since it uses less digits than its factorization.

231230313320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199336517 (or 199336513 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 231230313320 its reverse (23313032132), we get a palindrome (254543345452).

The spelling of 231230313320 in words is "two hundred thirty-one billion, two hundred thirty million, three hundred thirteen thousand, three hundred twenty".