131687700544 has 21 divisors (see below), whose sum is σ = 261323541741. Its totient is φ = 65842398720.

The previous prime is 131687700523. The next prime is 131687700581. The reversal of 131687700544 is 445007786131.

The square root of 131687700544 is 362888.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 701614144 + 130986086400 = 26488^2 + 361920^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131687700494 and 131687700503.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2880424 + ... + 2925784.

Almost surely, 2^131687700544 is an apocalyptic number.

131687700544 is the 362888-th square number.

It is an amenable number.

131687700544 is a deficient number, since it is larger than the sum of its proper divisors (129635841197).

131687700544 is an frugal number, since it uses more digits than its factorization.

131687700544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90734 (or 45363 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 131687700544 in words is "one hundred thirty-one billion, six hundred eighty-seven million, seven hundred thousand, five hundred forty-four".