131520030 has 64 divisors (see below), whose sum is σ = 324088128. Its totient is φ = 34145280.

The previous prime is 131519989. The next prime is 131520031. The reversal of 131520030 is 30025131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 131519991 and 131520009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131520031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287562 + ... + 288018.

It is an arithmetic number, because the mean of its divisors is an integer number (5063877).

Almost surely, 2^131520030 is an apocalyptic number.

131520030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131520030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162044064).

131520030 is an abundant number, since it is smaller than the sum of its proper divisors (192568098).

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

131520030 is a wasteful number, since it uses less digits than its factorization.

131520030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 131520030 is about 11468.2182574278. The cubic root of 131520030 is about 508.5464571410.

Adding to 131520030 its reverse (30025131), we get a palindrome (161545161).

The spelling of 131520030 in words is "one hundred thirty-one million, five hundred twenty thousand, thirty".