130712643 has 16 divisors (see below), whose sum is σ = 205040160. Its totient is φ = 82015488.

The previous prime is 130712639. The next prime is 130712653. The reversal of 130712643 is 346217031.

130712643 is a `hidden beast` number, since 1 + 3 + 0 + 7 + 12 + 643 = 666.

It is not a de Polignac number, because 130712643 - 2² = 130712639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (130712623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141930 + ... + 142847.

It is an arithmetic number, because the mean of its divisors is an integer number (12815010).

Almost surely, 2^130712643 is an apocalyptic number.

130712643 is a deficient number, since it is larger than the sum of its proper divisors (74327517).

130712643 is a wasteful number, since it uses less digits than its factorization.

130712643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284803 (or 284797 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 130712643 is about 11432.9630017769. The cubic root of 130712643 is about 507.5036834728.

Adding to 130712643 its reverse (346217031), we get a palindrome (476929674).

The spelling of 130712643 in words is "one hundred thirty million, seven hundred twelve thousand, six hundred forty-three".