30131000321 has 2 divisors, whose sum is σ = 30131000322. Its totient is φ = 30131000320.

The previous prime is 30131000303. The next prime is 30131000351. The reversal of 30131000321 is 12300013103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27106000321 + 3025000000 = 164639^2 + 55000^2 .

It is a cyclic number.

It is not a de Polignac number, because 30131000321 - 2⁶ = 30131000257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30131000296 and 30131000305.

It is not a weakly prime, because it can be changed into another prime (30131000351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15065500160 + 15065500161.

It is an arithmetic number, because the mean of its divisors is an integer number (15065500161).

Almost surely, 2^30131000321 is an apocalyptic number.

It is an amenable number.

30131000321 is a deficient number, since it is larger than the sum of its proper divisors (1).

30131000321 is an equidigital number, since it uses as much as digits as its factorization.

30131000321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 30131000321 its reverse (12300013103), we get a palindrome (42431013424).

The spelling of 30131000321 in words is "thirty billion, one hundred thirty-one million, three hundred twenty-one", and thus it is an aban number.