231234230340 has 36 divisors (see below), whose sum is σ = 701410499244. Its totient is φ = 61662461376.

The previous prime is 231234230309. The next prime is 231234230387. The reversal of 231234230340 is 43032432132.

231234230340 is a `hidden beast` number, since 2 + 3 + 12 + 342 + 303 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37688786496 + 193545443844 = 194136^2 + 439938^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 642317127 + ... + 642317486.

It is an arithmetic number, because the mean of its divisors is an integer number (19483624979).

Almost surely, 2^231234230340 is an apocalyptic number.

231234230340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231234230340 is an abundant number, since it is smaller than the sum of its proper divisors (470176268904).

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

231234230340 is a wasteful number, since it uses less digits than its factorization.

231234230340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284634628 (or 1284634623 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 231234230340 its reverse (43032432132), we get a palindrome (274266662472).

The spelling of 231234230340 in words is "two hundred thirty-one billion, two hundred thirty-four million, two hundred thirty thousand, three hundred forty".