130131309 has 48 divisors (see below), whose sum is σ = 229824000. Its totient is φ = 64643040.

The previous prime is 130131299. The next prime is 130131343. The reversal of 130131309 is 903131031.

It is not a de Polignac number, because 130131309 - 2⁴ = 130131293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130131349) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35442 + ... + 38940.

It is an arithmetic number, because the mean of its divisors is an integer number (4788000).

Almost surely, 2^130131309 is an apocalyptic number.

It is an amenable number.

130131309 is a deficient number, since it is larger than the sum of its proper divisors (99692691).

130131309 is a wasteful number, since it uses less digits than its factorization.

130131309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550 (or 3543 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 130131309 is about 11407.5110782326. The cubic root of 130131309 is about 506.7502047064.

The spelling of 130131309 in words is "one hundred thirty million, one hundred thirty-one thousand, three hundred nine".