131444002313 has 4 divisors (see below), whose sum is σ = 141555079428. Its totient is φ = 121332925200.

The previous prime is 131444002289. The next prime is 131444002321. The reversal of 131444002313 is 313200444131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313200444131 = 71 ⋅4411273861.

It can be written as a sum of positive squares in 2 ways, for example, as 7682873104 + 123761129209 = 87652^2 + 351797^2 .

It is a cyclic number.

It is not a de Polignac number, because 131444002313 - 2¹⁴ = 131443985929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131444902313) 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, 5055538538 + ... + 5055538563.

It is an arithmetic number, because the mean of its divisors is an integer number (35388769857).

Almost surely, 2^131444002313 is an apocalyptic number.

131444002313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131444002313 is a deficient number, since it is larger than the sum of its proper divisors (10111077115).

131444002313 is a wasteful number, since it uses less digits than its factorization.

131444002313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10111077114.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 131444002313 its reverse (313200444131), we get a palindrome (444644446444).

The spelling of 131444002313 in words is "one hundred thirty-one billion, four hundred forty-four million, two thousand, three hundred thirteen".