131231323132223 has 4 divisors (see below), whose sum is σ = 136937032833648. Its totient is φ = 125525613430800.

The previous prime is 131231323132213. The next prime is 131231323132229. The reversal of 131231323132223 is 322231323132131.

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 131231323132223 - 2⁸ = 131231323131967 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 131231323132223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131231323132229) 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, 2852854850678 + ... + 2852854850723.

It is an arithmetic number, because the mean of its divisors is an integer number (34234258208412).

Almost surely, 2^{131231323132223} is an apocalyptic number.

131231323132223 is a deficient number, since it is larger than the sum of its proper divisors (5705709701425).

131231323132223 is an equidigital number, since it uses as much as digits as its factorization.

131231323132223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705709701424.

The product of its digits is 23328, while the sum is 32.

Adding to 131231323132223 its reverse (322231323132131), we get a palindrome (453462646264354).

The spelling of 131231323132223 in words is "one hundred thirty-one trillion, two hundred thirty-one billion, three hundred twenty-three million, one hundred thirty-two thousand, two hundred twenty-three".