131130020323 has 4 divisors (see below), whose sum is σ = 138031600360. Its totient is φ = 124228440288.

The previous prime is 131130020317. The next prime is 131130020369. The reversal of 131130020323 is 323020031131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131130020323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 6901580017 = 131130020323 / (1 + 3 + 1 + 1 + 3 + 0 + 0 + 2 + 0 + 3 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131130020323.

It is not an unprimeable number, because it can be changed into a prime (131130024323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3450789990 + ... + 3450790027.

It is an arithmetic number, because the mean of its divisors is an integer number (34507900090).

Almost surely, 2^131130020323 is an apocalyptic number.

131130020323 is a deficient number, since it is larger than the sum of its proper divisors (6901580037).

131130020323 is an equidigital number, since it uses as much as digits as its factorization.

131130020323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6901580036.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 131130020323 its reverse (323020031131), we get a palindrome (454150051454).

The spelling of 131130020323 in words is "one hundred thirty-one billion, one hundred thirty million, twenty thousand, three hundred twenty-three".