231324424340 has 24 divisors (see below), whose sum is σ = 494946978120. Its totient is φ = 90783924608.

The previous prime is 231324424339. The next prime is 231324424369. The reversal of 231324424340 is 43424423132.

It can be written as a sum of positive squares in 4 ways, for example, as 84385602064 + 146938822276 = 290492^2 + 383326^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231324424297 and 231324424306.

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, 109114235 + ... + 109116354.

It is an arithmetic number, because the mean of its divisors is an integer number (20622790755).

Almost surely, 2^231324424340 is an apocalyptic number.

231324424340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231324424340 is an abundant number, since it is smaller than the sum of its proper divisors (263622553780).

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

231324424340 is a wasteful number, since it uses less digits than its factorization.

231324424340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218230651 (or 218230649 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 231324424340 its reverse (43424423132), we get a palindrome (274748847472).

The spelling of 231324424340 in words is "two hundred thirty-one billion, three hundred twenty-four million, four hundred twenty-four thousand, three hundred forty".