131223342043444 has 48 divisors (see below), whose sum is σ = 268949855469568. Its totient is φ = 54861337114848.

The previous prime is 131223342043433. The next prime is 131223342043459. The reversal of 131223342043444 is 444340243322131.

It is a happy number.

It is a super-2 number, since 2×131223342043444² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131223342043397 and 131223342043406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339362484 + ... + 339748939.

Almost surely, 2^{131223342043444} is an apocalyptic number.

131223342043444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131223342043444 is an abundant number, since it is smaller than the sum of its proper divisors (137726513426124).

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

131223342043444 is a wasteful number, since it uses less digits than its factorization.

131223342043444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679111604 (or 679111602 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 40.

Adding to 131223342043444 its reverse (444340243322131), we get a palindrome (575563585365575).

The spelling of 131223342043444 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, three hundred forty-two million, forty-three thousand, four hundred forty-four".