131312210011111 has 4 divisors (see below), whose sum is σ = 131315524425400. Its totient is φ = 131308895596824.

The previous prime is 131312210011097. The next prime is 131312210011123. The reversal of 131312210011111 is 111110012213131.

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 131312210011111 - 2¹¹ = 131312210009063 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 (131312210011211) 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, 1657147716 + ... + 1657226953.

It is an arithmetic number, because the mean of its divisors is an integer number (32828881106350).

Almost surely, 2^{131312210011111} is an apocalyptic number.

131312210011111 is a deficient number, since it is larger than the sum of its proper divisors (3314414289).

131312210011111 is an equidigital number, since it uses as much as digits as its factorization.

131312210011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314414288.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 131312210011111 its reverse (111110012213131), we get a palindrome (242422222224242).

The spelling of 131312210011111 in words is "one hundred thirty-one trillion, three hundred twelve billion, two hundred ten million, eleven thousand, one hundred eleven".