131047244840 has 32 divisors (see below), whose sum is σ = 294867417960. Its totient is φ = 52416921600.

The previous prime is 131047244821. The next prime is 131047244863. The reversal of 131047244840 is 48442740131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101568415204 + 29478829636 = 318698^2 + 171694^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131047244794 and 131047244803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499960 + ... + 1584920.

Almost surely, 2^131047244840 is an apocalyptic number.

131047244840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131047244840 is an abundant number, since it is smaller than the sum of its proper divisors (163820173120).

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

131047244840 is a wasteful number, since it uses less digits than its factorization.

131047244840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123533 (or 123529 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

Adding to 131047244840 its reverse (48442740131), we get a palindrome (179489984971).

The spelling of 131047244840 in words is "one hundred thirty-one billion, forty-seven million, two hundred forty-four thousand, eight hundred forty".