320313403 has 16 divisors (see below), whose sum is σ = 334968480. Its totient is φ = 306028800.

The previous prime is 320313401. The next prime is 320313437. The reversal of 320313403 is 304313023.

It is a cyclic number.

It is not a de Polignac number, because 320313403 - 2¹ = 320313401 is a prime.

It is a super-2 number, since 2×320313403² = 205201352282880818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320313401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694593 + ... + 695053.

It is an arithmetic number, because the mean of its divisors is an integer number (20935530).

Almost surely, 2^320313403 is an apocalyptic number.

320313403 is a deficient number, since it is larger than the sum of its proper divisors (14655077).

320313403 is a wasteful number, since it uses less digits than its factorization.

320313403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 320313403 is about 17897.3015563799. The cubic root of 320313403 is about 684.2136023091.

Adding to 320313403 its reverse (304313023), we get a palindrome (624626426).

The spelling of 320313403 in words is "three hundred twenty million, three hundred thirteen thousand, four hundred three".