131001511540 has 24 divisors (see below), whose sum is σ = 281500924320. Its totient is φ = 51181985568.

The previous prime is 131001511523. The next prime is 131001511561. The reversal of 131001511540 is 45115100131.

It is a super-2 number, since 2×131001511540² (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 7 ways as a sum of consecutive naturals, for example, 76162810 + ... + 76164529.

It is an arithmetic number, because the mean of its divisors is an integer number (11729205180).

Almost surely, 2^131001511540 is an apocalyptic number.

131001511540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131001511540 is an abundant number, since it is smaller than the sum of its proper divisors (150499412780).

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

131001511540 is a wasteful number, since it uses less digits than its factorization.

131001511540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152327391 (or 152327389 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 131001511540 its reverse (45115100131), we get a palindrome (176116611671).

The spelling of 131001511540 in words is "one hundred thirty-one billion, one million, five hundred eleven thousand, five hundred forty".