131444155434 has 16 divisors (see below), whose sum is σ = 264779595360. Its totient is φ = 43499504400.

The previous prime is 131444155433. The next prime is 131444155439. The reversal of 131444155434 is 434551444131.

It is a junction number, because it is equal to n+sod(n) for n = 131444155392 and 131444155401.

It is not an unprimeable number, because it can be changed into a prime (131444155433) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 78802617 + ... + 78804284.

It is an arithmetic number, because the mean of its divisors is an integer number (16548724710).

Almost surely, 2^131444155434 is an apocalyptic number.

131444155434 is an abundant number, since it is smaller than the sum of its proper divisors (133335439926).

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

131444155434 is a wasteful number, since it uses less digits than its factorization.

131444155434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157607045.

The product of its digits is 230400, while the sum is 39.

Adding to 131444155434 its reverse (434551444131), we get a palindrome (565995599565).

The spelling of 131444155434 in words is "one hundred thirty-one billion, four hundred forty-four million, one hundred fifty-five thousand, four hundred thirty-four".