131005320530 has 128 divisors (see below), whose sum is σ = 292190976000. Its totient is φ = 42152177088.

The previous prime is 131005320529. The next prime is 131005320533. The reversal of 131005320530 is 35023500131.

It is a junction number, because it is equal to n+sod(n) for n = 131005320496 and 131005320505.

It is not an unprimeable number, because it can be changed into a prime (131005320533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6963797 + ... + 6982583.

It is an arithmetic number, because the mean of its divisors is an integer number (2282742000).

Almost surely, 2^131005320530 is an apocalyptic number.

131005320530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131005320530 is an abundant number, since it is smaller than the sum of its proper divisors (161185655470).

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

131005320530 is a wasteful number, since it uses less digits than its factorization.

131005320530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18941 (or 18927 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 23.

Adding to 131005320530 its reverse (35023500131), we get a palindrome (166028820661).

The spelling of 131005320530 in words is "one hundred thirty-one billion, five million, three hundred twenty thousand, five hundred thirty".