320400106 has 8 divisors (see below), whose sum is σ = 517569444. Its totient is φ = 147876960.

The previous prime is 320400103. The next prime is 320400109. The reversal of 320400106 is 601004023.

It is an interprime number because it is at equal distance from previous prime (320400103) and next prime (320400109).

It can be written as a sum of positive squares in 2 ways, for example, as 311346025 + 9054081 = 17645^2 + 3009^2 .

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

It is a super-2 number, since 2×320400106² = 205312455849622472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320400106.

It is not an unprimeable number, because it can be changed into a prime (320400103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6161515 + ... + 6161566.

Almost surely, 2^320400106 is an apocalyptic number.

320400106 is a deficient number, since it is larger than the sum of its proper divisors (197169338).

320400106 is a wasteful number, since it uses less digits than its factorization.

320400106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12323096.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 320400106 is about 17899.7236291514. The cubic root of 320400106 is about 684.2753314569.

Adding to 320400106 its reverse (601004023), we get a palindrome (921404129).

The spelling of 320400106 in words is "three hundred twenty million, four hundred thousand, one hundred six".