30321212513 has 2 divisors, whose sum is σ = 30321212514. Its totient is φ = 30321212512.

The previous prime is 30321212489. The next prime is 30321212539. The reversal of 30321212513 is 31521212303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27913053184 + 2408159329 = 167072^2 + 49073^2 .

It is a cyclic number.

It is not a de Polignac number, because 30321212513 - 2²⁸ = 30052777057 is a prime.

It is not a weakly prime, because it can be changed into another prime (30321214513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15160606256 + 15160606257.

It is an arithmetic number, because the mean of its divisors is an integer number (15160606257).

Almost surely, 2^30321212513 is an apocalyptic number.

It is an amenable number.

30321212513 is a deficient number, since it is larger than the sum of its proper divisors (1).

30321212513 is an equidigital number, since it uses as much as digits as its factorization.

30321212513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 30321212513 its reverse (31521212303), we get a palindrome (61842424816).

The spelling of 30321212513 in words is "thirty billion, three hundred twenty-one million, two hundred twelve thousand, five hundred thirteen".