131161843268 has 24 divisors (see below), whose sum is σ = 235180488984. Its totient is φ = 63968083200.

The previous prime is 131161843261. The next prime is 131161843283. The reversal of 131161843268 is 862348161131.

It can be written as a sum of positive squares in 4 ways, for example, as 1041481984 + 130120361284 = 32272^2 + 360722^2 .

It is not an unprimeable number, because it can be changed into a prime (131161843261) 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, 732278 + ... + 893618.

It is an arithmetic number, because the mean of its divisors is an integer number (9799187041).

Almost surely, 2^131161843268 is an apocalyptic number.

It is an amenable number.

131161843268 is a deficient number, since it is larger than the sum of its proper divisors (104018645716).

131161843268 is a wasteful number, since it uses less digits than its factorization.

131161843268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166343 (or 166341 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The spelling of 131161843268 in words is "one hundred thirty-one billion, one hundred sixty-one million, eight hundred forty-three thousand, two hundred sixty-eight".