30313213121 has 2 divisors, whose sum is σ = 30313213122. Its totient is φ = 30313213120.

The previous prime is 30313213109. The next prime is 30313213127. The reversal of 30313213121 is 12131231303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21413932225 + 8899280896 = 146335^2 + 94336^2 .

It is a cyclic number.

It is not a de Polignac number, because 30313213121 - 2⁶ = 30313213057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30313213093 and 30313213102.

It is not a weakly prime, because it can be changed into another prime (30313213127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156606560 + 15156606561.

It is an arithmetic number, because the mean of its divisors is an integer number (15156606561).

Almost surely, 2^30313213121 is an apocalyptic number.

It is an amenable number.

30313213121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30313213121 is an equidigital number, since it uses as much as digits as its factorization.

30313213121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 30313213121 its reverse (12131231303), we get a palindrome (42444444424).

The spelling of 30313213121 in words is "thirty billion, three hundred thirteen million, two hundred thirteen thousand, one hundred twenty-one".