130665213 has 72 divisors (see below), whose sum is σ = 240884280. Its totient is φ = 67737600.

The previous prime is 130665211. The next prime is 130665263. The reversal of 130665213 is 312566031.

130665213 is a `hidden beast` number, since 1 + 3 + 0 + 6 + 652 + 1 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 59397849 + 71267364 = 7707^2 + 8442^2 .

It is not a de Polignac number, because 130665213 - 2¹ = 130665211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130665211) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 217113 + ... + 217713.

It is an arithmetic number, because the mean of its divisors is an integer number (3345615).

Almost surely, 2^130665213 is an apocalyptic number.

It is an amenable number.

130665213 is a deficient number, since it is larger than the sum of its proper divisors (110219067).

130665213 is a wasteful number, since it uses less digits than its factorization.

130665213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 130665213 is about 11430.8885481401. Note that the first 3 decimals coincide. The cubic root of 130665213 is about 507.4422922889.

The spelling of 130665213 in words is "one hundred thirty million, six hundred sixty-five thousand, two hundred thirteen".