131868106731 has 8 divisors (see below), whose sum is σ = 195360158160. Its totient is φ = 87912071136.

The previous prime is 131868106679. The next prime is 131868106789. The reversal of 131868106731 is 137601868131.

It is not a de Polignac number, because 131868106731 - 2³³ = 123278172139 is a prime.

It is a super-2 number, since 2×131868106731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131868106231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2442001950 + ... + 2442002003.

It is an arithmetic number, because the mean of its divisors is an integer number (24420019770).

Almost surely, 2^131868106731 is an apocalyptic number.

131868106731 is a deficient number, since it is larger than the sum of its proper divisors (63492051429).

131868106731 is an equidigital number, since it uses as much as digits as its factorization.

131868106731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884003962 (or 4884003956 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 131868106731 in words is "one hundred thirty-one billion, eight hundred sixty-eight million, one hundred six thousand, seven hundred thirty-one".