30220031321 has 2 divisors, whose sum is σ = 30220031322. Its totient is φ = 30220031320.

The previous prime is 30220031273. The next prime is 30220031323. The reversal of 30220031321 is 12313002203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25785936400 + 4434094921 = 160580^2 + 66589^2 .

It is a cyclic number.

It is not a de Polignac number, because 30220031321 - 2²² = 30215837017 is a prime.

Together with 30220031323, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30220031321.

It is not a weakly prime, because it can be changed into another prime (30220031323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110015660 + 15110015661.

It is an arithmetic number, because the mean of its divisors is an integer number (15110015661).

Almost surely, 2^30220031321 is an apocalyptic number.

It is an amenable number.

30220031321 is a deficient number, since it is larger than the sum of its proper divisors (1).

30220031321 is an equidigital number, since it uses as much as digits as its factorization.

30220031321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 30220031321 its reverse (12313002203), we get a palindrome (42533033524).

The spelling of 30220031321 in words is "thirty billion, two hundred twenty million, thirty-one thousand, three hundred twenty-one".