120031009 has 4 divisors (see below), whose sum is σ = 137178304. Its totient is φ = 102883716.

The previous prime is 120030991. The next prime is 120031063. The reversal of 120031009 is 900130021.

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 120031009 - 2¹³ = 120022817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120030983 and 120031001.

It is not an unprimeable number, because it can be changed into a prime (120031069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8573637 + ... + 8573650.

It is an arithmetic number, because the mean of its divisors is an integer number (34294576).

Almost surely, 2^120031009 is an apocalyptic number.

It is an amenable number.

120031009 is a deficient number, since it is larger than the sum of its proper divisors (17147295).

120031009 is an equidigital number, since it uses as much as digits as its factorization.

120031009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17147294.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 120031009 is about 10955.8664194120. The cubic root of 120031009 is about 493.2848971905.

The spelling of 120031009 in words is "one hundred twenty million, thirty-one thousand, nine".