131603299 has 2 divisors, whose sum is σ = 131603300. Its totient is φ = 131603298.

The previous prime is 131603287. The next prime is 131603333. The reversal of 131603299 is 992306131.

It is an a-pointer prime, because the next prime (131603333) can be obtained adding 131603299 to its sum of digits (34).

It is a weak prime.

It is an emirp because it is prime and its reverse (992306131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131603299 is a prime.

It is not a weakly prime, because it can be changed into another prime (131603279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65801649 + 65801650.

It is an arithmetic number, because the mean of its divisors is an integer number (65801650).

Almost surely, 2^131603299 is an apocalyptic number.

131603299 is a deficient number, since it is larger than the sum of its proper divisors (1).

131603299 is an equidigital number, since it uses as much as digits as its factorization.

131603299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 131603299 is about 11471.8481074324. The cubic root of 131603299 is about 508.6537594818.

It can be divided in two parts, 1316032 and 99, that added together give a palindrome (1316131).

The spelling of 131603299 in words is "one hundred thirty-one million, six hundred three thousand, two hundred ninety-nine".