131444534436 has 12 divisors (see below), whose sum is σ = 306703913712. Its totient is φ = 43814844808.

The previous prime is 131444534423. The next prime is 131444534447. The reversal of 131444534436 is 634435444131.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 5476855590 + ... + 5476855613.

It is an arithmetic number, because the mean of its divisors is an integer number (25558659476).

Almost surely, 2^131444534436 is an apocalyptic number.

It is an amenable number.

131444534436 is an abundant number, since it is smaller than the sum of its proper divisors (175259379276).

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

131444534436 is a wasteful number, since it uses less digits than its factorization.

131444534436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10953711210 (or 10953711208 counting only the distinct ones).

The product of its digits is 829440, while the sum is 42.

Adding to 131444534436 its reverse (634435444131), we get a palindrome (765879978567).

The spelling of 131444534436 in words is "one hundred thirty-one billion, four hundred forty-four million, five hundred thirty-four thousand, four hundred thirty-six".