131030660 has 12 divisors (see below), whose sum is σ = 275164428. Its totient is φ = 52412256.

The previous prime is 131030659. The next prime is 131030687. The reversal of 131030660 is 66030131.

It can be written as a sum of positive squares in 2 ways, for example, as 34480384 + 96550276 = 5872^2 + 9826^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 6551533 = 131030660 / (1 + 3 + 1 + 0 + 3 + 0 + 6 + 6 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275747 + ... + 3275786.

It is an arithmetic number, because the mean of its divisors is an integer number (22930369).

Almost surely, 2^131030660 is an apocalyptic number.

131030660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131030660 is an abundant number, since it is smaller than the sum of its proper divisors (144133768).

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

131030660 is a wasteful number, since it uses less digits than its factorization.

131030660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6551542 (or 6551540 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 131030660 is about 11446.8624522181. The cubic root of 131030660 is about 507.9149267504.

Adding to 131030660 its reverse (66030131), we get a palindrome (197060791).

The spelling of 131030660 in words is "one hundred thirty-one million, thirty thousand, six hundred sixty".