320115145 has 16 divisors (see below), whose sum is σ = 453178368. Its totient is φ = 212425920.

The previous prime is 320115139. The next prime is 320115163. The reversal of 320115145 is 541511023.

It is a happy number.

It is not a de Polignac number, because 320115145 - 2⁹ = 320114633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146434 + ... + 148603.

It is an arithmetic number, because the mean of its divisors is an integer number (28323648).

Almost surely, 2^320115145 is an apocalyptic number.

320115145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

320115145 is a deficient number, since it is larger than the sum of its proper divisors (133063223).

320115145 is a wasteful number, since it uses less digits than its factorization.

320115145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295080.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 320115145 is about 17891.7619311235. The cubic root of 320115145 is about 684.0724084911.

Adding to 320115145 its reverse (541511023), we get a palindrome (861626168).

The spelling of 320115145 in words is "three hundred twenty million, one hundred fifteen thousand, one hundred forty-five".