131243331336 has 128 divisors (see below), whose sum is σ = 355622467200. Its totient is φ = 40123330560.

The previous prime is 131243331311. The next prime is 131243331343. The reversal of 131243331336 is 633133342131.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 131243331297 and 131243331306.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 40795200 + ... + 40798416.

It is an arithmetic number, because the mean of its divisors is an integer number (2778300525).

Almost surely, 2^131243331336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131243331336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177811233600).

131243331336 is an abundant number, since it is smaller than the sum of its proper divisors (224379135864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131243331336 is a wasteful number, since it uses less digits than its factorization.

131243331336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039 (or 4035 counting only the distinct ones).

The product of its digits is 34992, while the sum is 33.

Adding to 131243331336 its reverse (633133342131), we get a palindrome (764376673467).

The spelling of 131243331336 in words is "one hundred thirty-one billion, two hundred forty-three million, three hundred thirty-one thousand, three hundred thirty-six".