131230340524340 has 48 divisors (see below), whose sum is σ = 276096365357904. Its totient is φ = 52394500761600.

The previous prime is 131230340524273. The next prime is 131230340524391. The reversal of 131230340524340 is 43425043032131.

It can be written as a sum of positive squares in 8 ways, for example, as 24739044554896 + 106491295969444 = 4973836^2 + 10319462^2 .

It is a super-2 number, since 2×131230340524340² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131230340524340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175203830 + ... + 175951250.

It is an arithmetic number, because the mean of its divisors is an integer number (5752007611623).

Almost surely, 2^{131230340524340} is an apocalyptic number.

131230340524340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131230340524340 is an abundant number, since it is smaller than the sum of its proper divisors (144866024833564).

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

131230340524340 is a wasteful number, since it uses less digits than its factorization.

131230340524340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763748 (or 763746 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 131230340524340 its reverse (43425043032131), we get a palindrome (174655383556471).

The spelling of 131230340524340 in words is "one hundred thirty-one trillion, two hundred thirty billion, three hundred forty million, five hundred twenty-four thousand, three hundred forty".