313222040213 has 2 divisors, whose sum is σ = 313222040214. Its totient is φ = 313222040212.

The previous prime is 313222040161. The next prime is 313222040221. The reversal of 313222040213 is 312040222313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225808387249 + 87413652964 = 475193^2 + 295658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313222040213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313222040233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156611020106 + 156611020107.

It is an arithmetic number, because the mean of its divisors is an integer number (156611020107).

Almost surely, 2^313222040213 is an apocalyptic number.

It is an amenable number.

313222040213 is a deficient number, since it is larger than the sum of its proper divisors (1).

313222040213 is an equidigital number, since it uses as much as digits as its factorization.

313222040213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 313222040213 its reverse (312040222313), we get a palindrome (625262262526).

The spelling of 313222040213 in words is "three hundred thirteen billion, two hundred twenty-two million, forty thousand, two hundred thirteen".