201311013221317 has 2 divisors, whose sum is σ = 201311013221318. Its totient is φ = 201311013221316.

The previous prime is 201311013221281. The next prime is 201311013221347. The reversal of 201311013221317 is 713122310113102.

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., 162345465488196 + 38965547733121 = 12741486^2 + 6242239^2 .

It is a cyclic number.

It is not a de Polignac number, because 201311013221317 - 2¹¹ = 201311013219269 is a prime.

It is a super-2 number, since 2×201311013221317² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201311013221347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100655506610658 + 100655506610659.

It is an arithmetic number, because the mean of its divisors is an integer number (100655506610659).

Almost surely, 2^{201311013221317} is an apocalyptic number.

It is an amenable number.

201311013221317 is a deficient number, since it is larger than the sum of its proper divisors (1).

201311013221317 is an equidigital number, since it uses as much as digits as its factorization.

201311013221317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

Adding to 201311013221317 its reverse (713122310113102), we get a palindrome (914433323334419).

The spelling of 201311013221317 in words is "two hundred one trillion, three hundred eleven billion, thirteen million, two hundred twenty-one thousand, three hundred seventeen".