131011202120223 has 4 divisors (see below), whose sum is σ = 174681602826968. Its totient is φ = 87340801413480.

The previous prime is 131011202120209. The next prime is 131011202120257. The reversal of 131011202120223 is 322021202110131.

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

It is not a de Polignac number, because 131011202120223 - 2¹⁸ = 131011201858079 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 131011202120223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131011202128223) 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, 21835200353368 + ... + 21835200353373.

It is an arithmetic number, because the mean of its divisors is an integer number (43670400706742).

Almost surely, 2^{131011202120223} is an apocalyptic number.

131011202120223 is a deficient number, since it is larger than the sum of its proper divisors (43670400706745).

131011202120223 is an equidigital number, since it uses as much as digits as its factorization.

131011202120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43670400706744.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 131011202120223 its reverse (322021202110131), we get a palindrome (453032404230354).

The spelling of 131011202120223 in words is "one hundred thirty-one trillion, eleven billion, two hundred two million, one hundred twenty thousand, two hundred twenty-three".