131823243668 has 12 divisors (see below), whose sum is σ = 238645527540. Its totient is φ = 63638807232.

The previous prime is 131823243619. The next prime is 131823243709. The reversal of 131823243668 is 866342328131.

It can be written as a sum of positive squares in 2 ways, for example, as 83164177924 + 48659065744 = 288382^2 + 220588^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 568203521 + ... + 568203752.

It is an arithmetic number, because the mean of its divisors is an integer number (19887127295).

Almost surely, 2^131823243668 is an apocalyptic number.

It is an amenable number.

131823243668 is a deficient number, since it is larger than the sum of its proper divisors (106822283872).

131823243668 is a wasteful number, since it uses less digits than its factorization.

131823243668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136407306 (or 1136407304 counting only the distinct ones).

The product of its digits is 995328, while the sum is 47.

The spelling of 131823243668 in words is "one hundred thirty-one billion, eight hundred twenty-three million, two hundred forty-three thousand, six hundred sixty-eight".