130687311049 has 3 divisors (see below), whose sum is σ = 130687672557. Its totient is φ = 130686949542.

The previous prime is 130687311043. The next prime is 130687311061. The reversal of 130687311049 is 940113786031.

The square root of 130687311049 is 361507.

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.

It is not a de Polignac number, because 130687311049 - 2³¹ = 128539827401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130687310996 and 130687311014.

It is not an unprimeable number, because it can be changed into a prime (130687311043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 180754 + ... + 542260.

It is an arithmetic number, because the mean of its divisors is an integer number (43562557519).

Almost surely, 2^130687311049 is an apocalyptic number.

130687311049 is the 361507-th square number.

130687311049 is the 180754-th centered octagonal number.

It is an amenable number.

130687311049 is a deficient number, since it is larger than the sum of its proper divisors (361508).

130687311049 is an frugal number, since it uses more digits than its factorization.

130687311049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723014 (or 361507 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 130687311049 in words is "one hundred thirty billion, six hundred eighty-seven million, three hundred eleven thousand, forty-nine".