320313545 has 8 divisors (see below), whose sum is σ = 396775680. Its totient is φ = 247984560.

The previous prime is 320313523. The next prime is 320313557. The reversal of 320313545 is 545313023.

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

It is not a de Polignac number, because 320313545 - 2⁶ = 320313481 is a prime.

It is a super-2 number, since 2×320313545² = 205201534220934050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033115 + ... + 1033424.

It is an arithmetic number, because the mean of its divisors is an integer number (49596960).

Almost surely, 2^320313545 is an apocalyptic number.

It is an amenable number.

320313545 is a deficient number, since it is larger than the sum of its proper divisors (76462135).

320313545 is a wasteful number, since it uses less digits than its factorization.

320313545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066575.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 320313545 is about 17897.3055234580. The cubic root of 320313545 is about 684.2137034167.

Adding to 320313545 its reverse (545313023), we get a palindrome (865626568).

The spelling of 320313545 in words is "three hundred twenty million, three hundred thirteen thousand, five hundred forty-five".