131001200240 has 20 divisors (see below), whose sum is σ = 304577790744. Its totient is φ = 52400480064.

The previous prime is 131001200237. The next prime is 131001200251. The reversal of 131001200240 is 42002100131.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×131001200240² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818757422 + ... + 818757581.

Almost surely, 2^131001200240 is an apocalyptic number.

131001200240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131001200240 is an abundant number, since it is smaller than the sum of its proper divisors (173576590504).

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

131001200240 is a wasteful number, since it uses less digits than its factorization.

131001200240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637515016 (or 1637515010 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 131001200240 its reverse (42002100131), we get a palindrome (173003300371).

The spelling of 131001200240 in words is "one hundred thirty-one billion, one million, two hundred thousand, two hundred forty".