130131021 has 8 divisors (see below), whose sum is σ = 173618784. Its totient is φ = 86698640.

The previous prime is 130131017. The next prime is 130131037. The reversal of 130131021 is 120131031.

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

It is a cyclic number.

It is not a de Polignac number, because 130131021 - 2² = 130131017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130130988 and 130131006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130131011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8010 + ... + 18011.

It is an arithmetic number, because the mean of its divisors is an integer number (21702348).

Almost surely, 2^130131021 is an apocalyptic number.

It is an amenable number.

130131021 is a deficient number, since it is larger than the sum of its proper divisors (43487763).

130131021 is a wasteful number, since it uses less digits than its factorization.

130131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27691.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 130131021 is about 11407.4984549637. The cubic root of 130131021 is about 506.7498308682.

Adding to 130131021 its reverse (120131031), we get a palindrome (250262052).

The spelling of 130131021 in words is "one hundred thirty million, one hundred thirty-one thousand, twenty-one".