130431648 has 48 divisors (see below), whose sum is σ = 343810656. Its totient is φ = 43296000.

The previous prime is 130431641. The next prime is 130431649. The reversal of 130431648 is 846134031.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (130431641) 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, 21390 + ... + 26802.

It is an arithmetic number, because the mean of its divisors is an integer number (7162722).

Almost surely, 2^130431648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130431648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171905328).

130431648 is an abundant number, since it is smaller than the sum of its proper divisors (213379008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130431648 is a wasteful number, since it uses less digits than its factorization.

130431648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5677 (or 5669 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 130431648 is about 11420.6675811881. The cubic root of 130431648 is about 507.1397597189.

Adding to 130431648 its reverse (846134031), we get a palindrome (976565679).

The spelling of 130431648 in words is "one hundred thirty million, four hundred thirty-one thousand, six hundred forty-eight".