30120013997 has 4 divisors (see below), whose sum is σ = 30120542880. Its totient is φ = 30119485116.

The previous prime is 30120013991. The next prime is 30120014009. The reversal of 30120013997 is 79931002103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30120013997 - 2⁶ = 30120013933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120013991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167063 + ... + 296900.

It is an arithmetic number, because the mean of its divisors is an integer number (7530135720).

Almost surely, 2^30120013997 is an apocalyptic number.

It is an amenable number.

30120013997 is a deficient number, since it is larger than the sum of its proper divisors (528883).

30120013997 is an equidigital number, since it uses as much as digits as its factorization.

30120013997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528882.

The product of its (nonzero) digits is 10206, while the sum is 35.

The spelling of 30120013997 in words is "thirty billion, one hundred twenty million, thirteen thousand, nine hundred ninety-seven".