131502692689 has 3 divisors (see below), whose sum is σ = 131503055323. Its totient is φ = 131502330056.

The previous prime is 131502692683. The next prime is 131502692729. The reversal of 131502692689 is 986296205131.

The square root of 131502692689 is 362633.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 986296205131 = 2539 ⋅388458529.

It can be written as a sum of positive squares in only one way, i.e., 26132339025 + 105370353664 = 161655^2 + 324608^2 .

It is not a de Polignac number, because 131502692689 - 2¹⁵ = 131502659921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131502692683) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 181317 + ... + 543949.

Almost surely, 2^131502692689 is an apocalyptic number.

131502692689 is the 362633-rd square number.

131502692689 is the 181317-th centered octagonal number.

It is an amenable number.

131502692689 is a deficient number, since it is larger than the sum of its proper divisors (362634).

131502692689 is an frugal number, since it uses more digits than its factorization.

131502692689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725266 (or 362633 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 131502692689 in words is "one hundred thirty-one billion, five hundred two million, six hundred ninety-two thousand, six hundred eighty-nine".