131244140103209 has 12 divisors (see below), whose sum is σ = 152676224636688. Its totient is φ = 112491683677800.

The previous prime is 131244140103187. The next prime is 131244140103227. The reversal of 131244140103209 is 902301041442131.

It is not a de Polignac number, because 131244140103209 - 2²⁴ = 131244123325993 is a prime.

It is a super-2 number, since 2×131244140103209² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131244140103239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37517507 + ... + 40866264.

It is an arithmetic number, because the mean of its divisors is an integer number (12723018719724).

Almost surely, 2^{131244140103209} is an apocalyptic number.

It is an amenable number.

131244140103209 is a deficient number, since it is larger than the sum of its proper divisors (21432084533479).

131244140103209 is an equidigital number, since it uses as much as digits as its factorization.

131244140103209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78417956 (or 78417949 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 131244140103209 in words is "one hundred thirty-one trillion, two hundred forty-four billion, one hundred forty million, one hundred three thousand, two hundred nine".