131306203 has 8 divisors (see below), whose sum is σ = 153257472. Its totient is φ = 110153256.

The previous prime is 131306179. The next prime is 131306209. The reversal of 131306203 is 302603131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131306203 - 2¹⁷ = 131175131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131306209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199225 + ... + 199882.

It is an arithmetic number, because the mean of its divisors is an integer number (19157184).

Almost surely, 2^131306203 is an apocalyptic number.

131306203 is a deficient number, since it is larger than the sum of its proper divisors (21951269).

131306203 is an equidigital number, since it uses as much as digits as its factorization.

131306203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399161.

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

The square root of 131306203 is about 11458.8918748717. The cubic root of 131306203 is about 508.2707071345.

Adding to 131306203 its reverse (302603131), we get a palindrome (433909334).

The spelling of 131306203 in words is "one hundred thirty-one million, three hundred six thousand, two hundred three".