130321540 has 24 divisors (see below), whose sum is σ = 274317120. Its totient is φ = 52006368.

The previous prime is 130321523. The next prime is 130321547. The reversal of 130321540 is 45123031.

It is not an unprimeable number, because it can be changed into a prime (130321547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1359 + ... + 16201.

It is an arithmetic number, because the mean of its divisors is an integer number (11429880).

Almost surely, 2^130321540 is an apocalyptic number.

130321540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130321540 is an abundant number, since it is smaller than the sum of its proper divisors (143995580).

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

130321540 is a wasteful number, since it uses less digits than its factorization.

130321540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15291 (or 15289 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 130321540 is about 11415.8460045675. The cubic root of 130321540 is about 506.9970135220.

Adding to 130321540 its reverse (45123031), we get a palindrome (175444571).

It can be divided in two parts, 13032 and 1540, that multiplied together give a triangular number (20069280 = T₆₃₃₅).

The spelling of 130321540 in words is "one hundred thirty million, three hundred twenty-one thousand, five hundred forty".