131131443555 has 48 divisors (see below), whose sum is σ = 260488949760. Its totient is φ = 59778771264.

The previous prime is 131131443529. The next prime is 131131443607. The reversal of 131131443555 is 555344131131.

131131443555 is a `hidden beast` number, since 1 + 31 + 1 + 31 + 4 + 43 + 555 = 666.

It is not a de Polignac number, because 131131443555 - 2⁷ = 131131443427 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 466707 + ... + 692876.

It is an arithmetic number, because the mean of its divisors is an integer number (5426853120).

Almost surely, 2^131131443555 is an apocalyptic number.

131131443555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131131443555 is a deficient number, since it is larger than the sum of its proper divisors (129357506205).

131131443555 is a wasteful number, since it uses less digits than its factorization.

131131443555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159960 (or 1159957 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

Adding to 131131443555 its reverse (555344131131), we get a palindrome (686475574686).

The spelling of 131131443555 in words is "one hundred thirty-one billion, one hundred thirty-one million, four hundred forty-three thousand, five hundred fifty-five".