231430344040 has 64 divisors (see below), whose sum is σ = 598127587200. Its totient is φ = 78944748288.

The previous prime is 231430343891. The next prime is 231430344049. The reversal of 231430344040 is 40443034132.

231430344040 is digitally balanced in base 2, 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 (28).

It is not an unprimeable number, because it can be changed into a prime (231430344049) 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 15 ways as a sum of consecutive naturals, for example, 2042650 + ... + 2152969.

It is an arithmetic number, because the mean of its divisors is an integer number (9345743550).

Almost surely, 2^231430344040 is an apocalyptic number.

231430344040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231430344040 is an abundant number, since it is smaller than the sum of its proper divisors (366697243160).

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

231430344040 is a wasteful number, since it uses less digits than its factorization.

231430344040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195834 (or 4195830 counting only the distinct ones).

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

Adding to 231430344040 its reverse (40443034132), we get a palindrome (271873378172).

The spelling of 231430344040 in words is "two hundred thirty-one billion, four hundred thirty million, three hundred forty-four thousand, forty".