130720109 has 8 divisors (see below), whose sum is σ = 146896512. Its totient is φ = 115418160.

The previous prime is 130720097. The next prime is 130720153. The reversal of 130720109 is 901027031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130720109 - 2¹² = 130716013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130720309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218297 + ... + 218894.

It is an arithmetic number, because the mean of its divisors is an integer number (18362064).

Almost surely, 2^130720109 is an apocalyptic number.

It is an amenable number.

130720109 is a deficient number, since it is larger than the sum of its proper divisors (16176403).

130720109 is a wasteful number, since it uses less digits than its factorization.

130720109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437227.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 130720109 is about 11433.2895091483. The cubic root of 130720109 is about 507.5133457628.

The spelling of 130720109 in words is "one hundred thirty million, seven hundred twenty thousand, one hundred nine".