30331221231313 has 2 divisors, whose sum is σ = 30331221231314. Its totient is φ = 30331221231312.

The previous prime is 30331221231263. The next prime is 30331221231317. The reversal of 30331221231313 is 31313212213303.

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., 19209216340224 + 11122004891089 = 4382832^2 + 3334967^2 .

It is a cyclic number.

It is not a de Polignac number, because 30331221231313 - 2¹⁷ = 30331221100241 is a prime.

It is not a weakly prime, because it can be changed into another prime (30331221231317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15165610615656 + 15165610615657.

It is an arithmetic number, because the mean of its divisors is an integer number (15165610615657).

Almost surely, 2^{30331221231313} is an apocalyptic number.

It is an amenable number.

30331221231313 is a deficient number, since it is larger than the sum of its proper divisors (1).

30331221231313 is an equidigital number, since it uses as much as digits as its factorization.

30331221231313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 30331221231313 its reverse (31313212213303), we get a palindrome (61644433444616).

The spelling of 30331221231313 in words is "thirty trillion, three hundred thirty-one billion, two hundred twenty-one million, two hundred thirty-one thousand, three hundred thirteen".