30690835321 has 2 divisors, whose sum is σ = 30690835322. Its totient is φ = 30690835320.

The previous prime is 30690835313. The next prime is 30690835393. The reversal of 30690835321 is 12353809603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28682809600 + 2008025721 = 169360^2 + 44811^2 .

It is an emirp because it is prime and its reverse (12353809603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30690835321 - 2³ = 30690835313 is a prime.

It is not a weakly prime, because it can be changed into another prime (30690835121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15345417660 + 15345417661.

It is an arithmetic number, because the mean of its divisors is an integer number (15345417661).

Almost surely, 2^30690835321 is an apocalyptic number.

It is an amenable number.

30690835321 is a deficient number, since it is larger than the sum of its proper divisors (1).

30690835321 is an equidigital number, since it uses as much as digits as its factorization.

30690835321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 30690835321 in words is "thirty billion, six hundred ninety million, eight hundred thirty-five thousand, three hundred twenty-one".