30320990389 has 2 divisors, whose sum is σ = 30320990390. Its totient is φ = 30320990388.

The previous prime is 30320990383. The next prime is 30320990417. The reversal of 30320990389 is 98309902303.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24662189764 + 5658800625 = 157042^2 + 75225^2 .

It is a cyclic number.

It is not a de Polignac number, because 30320990389 - 2⁷ = 30320990261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30320990383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15160495194 + 15160495195.

It is an arithmetic number, because the mean of its divisors is an integer number (15160495195).

Almost surely, 2^30320990389 is an apocalyptic number.

It is an amenable number.

30320990389 is a deficient number, since it is larger than the sum of its proper divisors (1).

30320990389 is an equidigital number, since it uses as much as digits as its factorization.

30320990389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 46.

The spelling of 30320990389 in words is "thirty billion, three hundred twenty million, nine hundred ninety thousand, three hundred eighty-nine".