131011443223208 has 16 divisors (see below), whose sum is σ = 245651648258580. Its totient is φ = 65504337020928.

The previous prime is 131011443223207. The next prime is 131011443223229. The reversal of 131011443223208 is 802322344110131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 128543395939204 + 2468047284004 = 11337698^2 + 1571002^2 .

It is a super-4 number, since 4×131011443223208⁴ (a number of 58 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (131011443223207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172671641 + ... + 173428712.

Almost surely, 2^{131011443223208} is an apocalyptic number.

It is an amenable number.

131011443223208 is a deficient number, since it is larger than the sum of its proper divisors (114640205035372).

131011443223208 is a wasteful number, since it uses less digits than its factorization.

131011443223208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346147676 (or 346147672 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

Adding to 131011443223208 its reverse (802322344110131), we get a palindrome (933333787333339).

The spelling of 131011443223208 in words is "one hundred thirty-one trillion, eleven billion, four hundred forty-three million, two hundred twenty-three thousand, two hundred eight".