131312313122213 has 4 divisors (see below), whose sum is σ = 131337075019488. Its totient is φ = 131287551224940.

The previous prime is 131312313122209. The next prime is 131312313122273. The reversal of 131312313122213 is 312221313213131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131312313122213 - 2² = 131312313122209 is a prime.

It is a super-2 number, since 2×131312313122213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312313122273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12380940683 + ... + 12380951288.

It is an arithmetic number, because the mean of its divisors is an integer number (32834268754872).

Almost surely, 2^{131312313122213} is an apocalyptic number.

It is an amenable number.

131312313122213 is a deficient number, since it is larger than the sum of its proper divisors (24761897275).

131312313122213 is an equidigital number, since it uses as much as digits as its factorization.

131312313122213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24761897274.

The product of its digits is 3888, while the sum is 29.

Adding to 131312313122213 its reverse (312221313213131), we get a palindrome (443533626335344).

The spelling of 131312313122213 in words is "one hundred thirty-one trillion, three hundred twelve billion, three hundred thirteen million, one hundred twenty-two thousand, two hundred thirteen".