131031113420444 has 24 divisors (see below), whose sum is σ = 229389977409600. Its totient is φ = 65491121868480.

The previous prime is 131031113420401. The next prime is 131031113420483. The reversal of 131031113420444 is 444024311130131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131031113420444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276955562 + ... + 277428270.

It is an arithmetic number, because the mean of its divisors is an integer number (9557915725400).

Almost surely, 2^{131031113420444} is an apocalyptic number.

It is an amenable number.

131031113420444 is a deficient number, since it is larger than the sum of its proper divisors (98358863989156).

131031113420444 is a wasteful number, since it uses less digits than its factorization.

131031113420444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498413 (or 498411 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 131031113420444 its reverse (444024311130131), we get a palindrome (575055424550575).

The spelling of 131031113420444 in words is "one hundred thirty-one trillion, thirty-one billion, one hundred thirteen million, four hundred twenty thousand, four hundred forty-four".