120315917 has 4 divisors (see below), whose sum is σ = 120467676. Its totient is φ = 120164160.

The previous prime is 120315889. The next prime is 120315931. The reversal of 120315917 is 719513021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80802121 + 39513796 = 8989^2 + 6286^2 .

It is a cyclic number.

It is not a de Polignac number, because 120315917 - 2¹⁰ = 120314893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120315917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120317917) 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, 74684 + ... + 76277.

It is an arithmetic number, because the mean of its divisors is an integer number (30116919).

Almost surely, 2^120315917 is an apocalyptic number.

It is an amenable number.

120315917 is a deficient number, since it is larger than the sum of its proper divisors (151759).

120315917 is an equidigital number, since it uses as much as digits as its factorization.

120315917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151758.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 120315917 is about 10968.8612444501. The cubic root of 120315917 is about 493.6748790911.

Adding to 120315917 its reverse (719513021), we get a palindrome (839828938).

The spelling of 120315917 in words is "one hundred twenty million, three hundred fifteen thousand, nine hundred seventeen".