130331240 has 64 divisors (see below), whose sum is σ = 321829200. Its totient is φ = 47204352.

The previous prime is 130331239. The next prime is 130331263. The reversal of 130331240 is 42133031.

It is a happy number.

130331240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 12348196 + 117983044 = 3514^2 + 10862^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25196 + ... + 29924.

Almost surely, 2^130331240 is an apocalyptic number.

130331240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130331240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160914600).

130331240 is an abundant number, since it is smaller than the sum of its proper divisors (191497960).

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

130331240 is a wasteful number, since it uses less digits than its factorization.

130331240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4806 (or 4802 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 130331240 is about 11416.2708447198. The cubic root of 130331240 is about 507.0095920234.

Adding to 130331240 its reverse (42133031), we get a palindrome (172464271).

The spelling of 130331240 in words is "one hundred thirty million, three hundred thirty-one thousand, two hundred forty".