131313231223 has 4 divisors (see below), whose sum is σ = 139037538960. Its totient is φ = 123588923488.

The previous prime is 131313231221. The next prime is 131313231293. The reversal of 131313231223 is 322132313131.

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 131313231223 - 2¹ = 131313231221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131313231221) 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, 3862153843 + ... + 3862153876.

It is an arithmetic number, because the mean of its divisors is an integer number (34759384740).

Almost surely, 2^131313231223 is an apocalyptic number.

131313231223 is a deficient number, since it is larger than the sum of its proper divisors (7724307737).

131313231223 is an equidigital number, since it uses as much as digits as its factorization.

131313231223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7724307736.

The product of its digits is 1944, while the sum is 25.

Adding to 131313231223 its reverse (322132313131), we get a palindrome (453445544354).

The spelling of 131313231223 in words is "one hundred thirty-one billion, three hundred thirteen million, two hundred thirty-one thousand, two hundred twenty-three".