131211221301223 has 32 divisors (see below), whose sum is σ = 152361723945600. Its totient is φ = 110675165128704.

The previous prime is 131211221301221. The next prime is 131211221301233. The reversal of 131211221301223 is 322103122112131.

It is a cyclic number.

It is not a de Polignac number, because 131211221301223 - 2¹ = 131211221301221 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 (131211221301221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150911283 + ... + 151778251.

It is an arithmetic number, because the mean of its divisors is an integer number (4761303873300).

Almost surely, 2^{131211221301223} is an apocalyptic number.

131211221301223 is a deficient number, since it is larger than the sum of its proper divisors (21150502644377).

131211221301223 is an equidigital number, since it uses as much as digits as its factorization.

131211221301223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868219.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 131211221301223 its reverse (322103122112131), we get a palindrome (453314343413354).

The spelling of 131211221301223 in words is "one hundred thirty-one trillion, two hundred eleven billion, two hundred twenty-one million, three hundred one thousand, two hundred twenty-three".