320312499 has 16 divisors (see below), whose sum is σ = 462874272. Its totient is φ = 195856128.

The previous prime is 320312477. The next prime is 320312533. The reversal of 320312499 is 994213023.

It is not a de Polignac number, because 320312499 - 2¹⁵ = 320279731 is a prime.

It is a plaindrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (320312449) 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, 20034 + ... + 32279.

It is an arithmetic number, because the mean of its divisors is an integer number (28929642).

Almost surely, 2^320312499 is an apocalyptic number.

320312499 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

320312499 is a deficient number, since it is larger than the sum of its proper divisors (142561773).

320312499 is a wasteful number, since it uses less digits than its factorization.

320312499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52486.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 320312499 is about 17897.2763011582. The cubic root of 320312499 is about 684.2129586378.

The spelling of 320312499 in words is "three hundred twenty million, three hundred twelve thousand, four hundred ninety-nine".