131313120233 has 2 divisors, whose sum is σ = 131313120234. Its totient is φ = 131313120232.

The previous prime is 131313120223. The next prime is 131313120251. The reversal of 131313120233 is 332021313131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125958978649 + 5354141584 = 354907^2 + 73172^2 .

It is an emirp because it is prime and its reverse (332021313131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131313120233 - 2²² = 131308925929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131313120199 and 131313120208.

It is not a weakly prime, because it can be changed into another prime (131313120223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65656560116 + 65656560117.

It is an arithmetic number, because the mean of its divisors is an integer number (65656560117).

Almost surely, 2^131313120233 is an apocalyptic number.

It is an amenable number.

131313120233 is a deficient number, since it is larger than the sum of its proper divisors (1).

131313120233 is an equidigital number, since it uses as much as digits as its factorization.

131313120233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 131313120233 its reverse (332021313131), we get a palindrome (463334433364).

The spelling of 131313120233 in words is "one hundred thirty-one billion, three hundred thirteen million, one hundred twenty thousand, two hundred thirty-three".