120405313 has 8 divisors (see below), whose sum is σ = 138198528. Its totient is φ = 102760224.

The previous prime is 120405301. The next prime is 120405317. The reversal of 120405313 is 313504021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120405313 - 2¹⁷ = 120274241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120405317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35281 + ... + 38542.

It is an arithmetic number, because the mean of its divisors is an integer number (17274816).

Almost surely, 2^120405313 is an apocalyptic number.

It is an amenable number.

120405313 is a deficient number, since it is larger than the sum of its proper divisors (17793215).

120405313 is an equidigital number, since it uses as much as digits as its factorization.

120405313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74063.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 120405313 is about 10972.9354778017. The cubic root of 120405313 is about 493.7971173751.

Adding to 120405313 its reverse (313504021), we get a palindrome (433909334).

The spelling of 120405313 in words is "one hundred twenty million, four hundred five thousand, three hundred thirteen".