231244303240 has 32 divisors (see below), whose sum is σ = 521003808000. Its totient is φ = 92372543424.

The previous prime is 231244303201. The next prime is 231244303247. The reversal of 231244303240 is 42303442132.

231244303240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231244303199 and 231244303208.

It is not an unprimeable number, because it can be changed into a prime (231244303247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3881880 + ... + 3940999.

It is an arithmetic number, because the mean of its divisors is an integer number (16281369000).

Almost surely, 2^231244303240 is an apocalyptic number.

231244303240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231244303240 is an abundant number, since it is smaller than the sum of its proper divisors (289759504760).

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

231244303240 is a wasteful number, since it uses less digits than its factorization.

231244303240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7823629 (or 7823625 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 231244303240 its reverse (42303442132), we get a palindrome (273547745372).

The spelling of 231244303240 in words is "two hundred thirty-one billion, two hundred forty-four million, three hundred three thousand, two hundred forty".