323113301221261 has 2 divisors, whose sum is σ = 323113301221262. Its totient is φ = 323113301221260.

The previous prime is 323113301221259. The next prime is 323113301221303. The reversal of 323113301221261 is 162122103311323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194979164688036 + 128134136533225 = 13963494^2 + 11319635^2 .

It is a cyclic number.

It is not a de Polignac number, because 323113301221261 - 2¹ = 323113301221259 is a prime.

It is a super-2 number, since 2×323113301221261² (a number of 30 digits) contains 22 as substring.

Together with 323113301221259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323113301221561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161556650610630 + 161556650610631.

It is an arithmetic number, because the mean of its divisors is an integer number (161556650610631).

Almost surely, 2^{323113301221261} is an apocalyptic number.

It is an amenable number.

323113301221261 is a deficient number, since it is larger than the sum of its proper divisors (1).

323113301221261 is an equidigital number, since it uses as much as digits as its factorization.

323113301221261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 323113301221261 its reverse (162122103311323), we get a palindrome (485235404532584).

The spelling of 323113301221261 in words is "three hundred twenty-three trillion, one hundred thirteen billion, three hundred one million, two hundred twenty-one thousand, two hundred sixty-one".