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320442107 = 817139217
BaseRepresentation
bin10011000110011…
…000111011111011
3211022222010221012
4103012120323323
51124013121412
651444104135
710640466356
oct2306307373
9738863835
10320442107
11154976997
128b39504b
135150751b
14307b529d
151d1eac22
hex13198efb

320442107 has 4 divisors (see below), whose sum is σ = 320489496. Its totient is φ = 320394720.

The previous prime is 320442079. The next prime is 320442127. The reversal of 320442107 is 701244023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 701244023 = 2333009631.

It is a cyclic number.

It is not a de Polignac number, because 320442107 - 26 = 320442043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320442127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11438 + ... + 27779.

It is an arithmetic number, because the mean of its divisors is an integer number (80122374).

Almost surely, 2320442107 is an apocalyptic number.

320442107 is a deficient number, since it is larger than the sum of its proper divisors (47389).

320442107 is an equidigital number, since it uses as much as digits as its factorization.

320442107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47388.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 320442107 is about 17900.8968211093. The cubic root of 320442107 is about 684.3052305236.

The spelling of 320442107 in words is "three hundred twenty million, four hundred forty-two thousand, one hundred seven".

Divisors: 1 8171 39217 320442107