30021331939 has 2 divisors, whose sum is σ = 30021331940. Its totient is φ = 30021331938.

The previous prime is 30021331933. The next prime is 30021332017. The reversal of 30021331939 is 93913312003.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30021331939 - 2¹³ = 30021323747 is a prime.

It is not a weakly prime, because it can be changed into another prime (30021331933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15010665969 + 15010665970.

It is an arithmetic number, because the mean of its divisors is an integer number (15010665970).

Almost surely, 2^30021331939 is an apocalyptic number.

30021331939 is a deficient number, since it is larger than the sum of its proper divisors (1).

30021331939 is an equidigital number, since it uses as much as digits as its factorization.

30021331939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 34.

The spelling of 30021331939 in words is "thirty billion, twenty-one million, three hundred thirty-one thousand, nine hundred thirty-nine".