131312221203 has 16 divisors (see below), whose sum is σ = 184717702400. Its totient is φ = 82745102880.

The previous prime is 131312221199. The next prime is 131312221211. The reversal of 131312221203 is 302122213131.

It is not a de Polignac number, because 131312221203 - 2² = 131312221199 is a prime.

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 131312221203.

It is not an unprimeable number, because it can be changed into a prime (131312221603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2598808 + ... + 2648853.

It is an arithmetic number, because the mean of its divisors is an integer number (11544856400).

Almost surely, 2^131312221203 is an apocalyptic number.

131312221203 is a deficient number, since it is larger than the sum of its proper divisors (53405481197).

131312221203 is a wasteful number, since it uses less digits than its factorization.

131312221203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5248122.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131312221203 its reverse (302122213131), we get a palindrome (433434434334).

The spelling of 131312221203 in words is "one hundred thirty-one billion, three hundred twelve million, two hundred twenty-one thousand, two hundred three".