135250313213 has 2 divisors, whose sum is σ = 135250313214. Its totient is φ = 135250313212.

The previous prime is 135250313201. The next prime is 135250313221. The reversal of 135250313213 is 312313052531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82192876249 + 53057436964 = 286693^2 + 230342^2 .

It is a cyclic number.

It is not a de Polignac number, because 135250313213 - 2²⁸ = 134981877757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135250313293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67625156606 + 67625156607.

It is an arithmetic number, because the mean of its divisors is an integer number (67625156607).

Almost surely, 2^135250313213 is an apocalyptic number.

It is an amenable number.

135250313213 is a deficient number, since it is larger than the sum of its proper divisors (1).

135250313213 is an equidigital number, since it uses as much as digits as its factorization.

135250313213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 135250313213 its reverse (312313052531), we get a palindrome (447563365744).

The spelling of 135250313213 in words is "one hundred thirty-five billion, two hundred fifty million, three hundred thirteen thousand, two hundred thirteen".