131320312203 has 4 divisors (see below), whose sum is σ = 175093749608. Its totient is φ = 87546874800.

The previous prime is 131320312187. The next prime is 131320312217. The reversal of 131320312203 is 302213023131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302213023131 = 3 ⋅100737674377.

It is not a de Polignac number, because 131320312203 - 2⁴ = 131320312187 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 131320312203.

It is not an unprimeable number, because it can be changed into a prime (131320312283) 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, 21886718698 + ... + 21886718703.

It is an arithmetic number, because the mean of its divisors is an integer number (43773437402).

Almost surely, 2^131320312203 is an apocalyptic number.

131320312203 is a deficient number, since it is larger than the sum of its proper divisors (43773437405).

131320312203 is an equidigital number, since it uses as much as digits as its factorization.

131320312203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43773437404.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 131320312203 its reverse (302213023131), we get a palindrome (433533335334).

The spelling of 131320312203 in words is "one hundred thirty-one billion, three hundred twenty million, three hundred twelve thousand, two hundred three".