31320322123361 has 2 divisors, whose sum is σ = 31320322123362. Its totient is φ = 31320322123360.

The previous prime is 31320322123297. The next prime is 31320322123379. The reversal of 31320322123361 is 16332122302313.

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., 31148900454400 + 171421668961 = 5581120^2 + 414031^2 .

It is a cyclic number.

It is not a de Polignac number, because 31320322123361 - 2⁶ = 31320322123297 is a prime.

It is a super-2 number, since 2×31320322123361² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31320322123381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660161061680 + 15660161061681.

It is an arithmetic number, because the mean of its divisors is an integer number (15660161061681).

Almost surely, 2^{31320322123361} is an apocalyptic number.

It is an amenable number.

31320322123361 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320322123361 is an equidigital number, since it uses as much as digits as its factorization.

31320322123361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 32.

Adding to 31320322123361 its reverse (16332122302313), we get a palindrome (47652444425674).

The spelling of 31320322123361 in words is "thirty-one trillion, three hundred twenty billion, three hundred twenty-two million, one hundred twenty-three thousand, three hundred sixty-one".