131111340444 has 120 divisors (see below), whose sum is σ = 391873426560. Its totient is φ = 37445268384.

The previous prime is 131111340427. The next prime is 131111340461. The reversal of 131111340444 is 444043111131.

131111340444 is a `hidden beast` number, since 1 + 311 + 1 + 1 + 340 + 4 + 4 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (131111340427) and next prime (131111340461).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6383239 + ... + 6403745.

It is an arithmetic number, because the mean of its divisors is an integer number (3265611888).

Almost surely, 2^131111340444 is an apocalyptic number.

131111340444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131111340444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195936713280).

131111340444 is an abundant number, since it is smaller than the sum of its proper divisors (260762086116).

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

131111340444 is a wasteful number, since it uses less digits than its factorization.

131111340444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23349 (or 23338 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 131111340444 its reverse (444043111131), we get a palindrome (575154451575).

The spelling of 131111340444 in words is "one hundred thirty-one billion, one hundred eleven million, three hundred forty thousand, four hundred forty-four".