131031204223 has 4 divisors (see below), whose sum is σ = 135549521640. Its totient is φ = 126512886808.

The previous prime is 131031204221. The next prime is 131031204253. The reversal of 131031204223 is 322402130131.

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

It is a cyclic number.

It is not a de Polignac number, because 131031204223 - 2¹ = 131031204221 is a prime.

It is a super-3 number, since 3×131031204223³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131031204194 and 131031204203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031204221) 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 3 ways as a sum of consecutive naturals, for example, 2259158665 + ... + 2259158722.

It is an arithmetic number, because the mean of its divisors is an integer number (33887380410).

Almost surely, 2^131031204223 is an apocalyptic number.

131031204223 is a deficient number, since it is larger than the sum of its proper divisors (4518317417).

131031204223 is an equidigital number, since it uses as much as digits as its factorization.

131031204223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518317416.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 131031204223 its reverse (322402130131), we get a palindrome (453433334354).

The spelling of 131031204223 in words is "one hundred thirty-one billion, thirty-one million, two hundred four thousand, two hundred twenty-three".