131520430 has 16 divisors (see below), whose sum is σ = 236903040. Its totient is φ = 52571232.

The previous prime is 131520419. The next prime is 131520439. The reversal of 131520430 is 34025131.

It is a junction number, because it is equal to n+sod(n) for n = 131520398 and 131520407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131520439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13852 + ... + 21328.

It is an arithmetic number, because the mean of its divisors is an integer number (14806440).

Almost surely, 2^131520430 is an apocalyptic number.

131520430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131520430 is a deficient number, since it is larger than the sum of its proper divisors (105382610).

131520430 is a wasteful number, since it uses less digits than its factorization.

131520430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9243.

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

The square root of 131520430 is about 11468.2356969152. The cubic root of 131520430 is about 508.5469726985.

Adding to 131520430 its reverse (34025131), we get a palindrome (165545561).

The spelling of 131520430 in words is "one hundred thirty-one million, five hundred twenty thousand, four hundred thirty".