130431321 has 24 divisors (see below), whose sum is σ = 197099136. Its totient is φ = 82959360.

The previous prime is 130431317. The next prime is 130431383. The reversal of 130431321 is 123134031.

It is not a de Polignac number, because 130431321 - 2² = 130431317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130431294 and 130431303.

It is not an unprimeable number, because it can be changed into a prime (130431391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132196 + ... + 133178.

It is an arithmetic number, because the mean of its divisors is an integer number (8212464).

Almost surely, 2^130431321 is an apocalyptic number.

It is an amenable number.

130431321 is a deficient number, since it is larger than the sum of its proper divisors (66667815).

130431321 is a wasteful number, since it uses less digits than its factorization.

130431321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1650 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 130431321 is about 11420.6532650282. The cubic root of 130431321 is about 507.1393359085.

Adding to 130431321 its reverse (123134031), we get a palindrome (253565352).

The spelling of 130431321 in words is "one hundred thirty million, four hundred thirty-one thousand, three hundred twenty-one".