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10381219 = 47220877
BaseRepresentation
bin100111100110…
…011110100011
3201112102100121
4213212132203
510124144334
61010301111
7154144642
oct47463643
921472317
1010381219
115950622
123587797
1321c6244
141543359
15da0db4
hex9e67a3

10381219 has 4 divisors (see below), whose sum is σ = 10602144. Its totient is φ = 10160296.

The previous prime is 10381207. The next prime is 10381223. The reversal of 10381219 is 91218301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91218301 = 95395717.

It is a cyclic number.

It is not a de Polignac number, because 10381219 - 223 = 1992611 is a prime.

It is a super-2 number, since 2×103812192 = 215539415851922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10381193 and 10381202.

It is not an unprimeable number, because it can be changed into a prime (10381229) 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, 110392 + ... + 110485.

It is an arithmetic number, because the mean of its divisors is an integer number (2650536).

Almost surely, 210381219 is an apocalyptic number.

10381219 is a deficient number, since it is larger than the sum of its proper divisors (220925).

10381219 is an equidigital number, since it uses as much as digits as its factorization.

10381219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220924.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 10381219 is about 3221.9899130817. The cubic root of 10381219 is about 218.1471035310.

The spelling of 10381219 in words is "ten million, three hundred eighty-one thousand, two hundred nineteen".

Divisors: 1 47 220877 10381219