130661387 has 4 divisors (see below), whose sum is σ = 131006520. Its totient is φ = 130316256.

The previous prime is 130661369. The next prime is 130661389. The reversal of 130661387 is 783166031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130661387 - 2⁸ = 130661131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130661389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171998 + ... + 172755.

It is an arithmetic number, because the mean of its divisors is an integer number (32751630).

Almost surely, 2^130661387 is an apocalyptic number.

130661387 is a deficient number, since it is larger than the sum of its proper divisors (345133).

130661387 is an equidigital number, since it uses as much as digits as its factorization.

130661387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345132.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 130661387 is about 11430.7211933456. The cubic root of 130661387 is about 507.4373394451.

The spelling of 130661387 in words is "one hundred thirty million, six hundred sixty-one thousand, three hundred eighty-seven".