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12010031409 = 34003343803
BaseRepresentation
bin10110010111101101…
…01000100100110001
31010222222222210212010
423023312220210301
5144044032001114
65303424353133
7603422403555
oct131366504461
933888883763
1012010031409
1151033933a2
1223b21757a9
13119526777c
1481d0ad865
154a45a2c59
hex2cbda8931

12010031409 has 4 divisors (see below), whose sum is σ = 16013375216. Its totient is φ = 8006687604.

The previous prime is 12010031387. The next prime is 12010031413. The reversal of 12010031409 is 90413001021.

12010031409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12010031409 - 219 = 12009507121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12010031419) 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, 2001671899 + ... + 2001671904.

It is an arithmetic number, because the mean of its divisors is an integer number (4003343804).

Almost surely, 212010031409 is an apocalyptic number.

It is an amenable number.

12010031409 is a deficient number, since it is larger than the sum of its proper divisors (4003343807).

12010031409 is an equidigital number, since it uses as much as digits as its factorization.

12010031409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003343806.

The product of its (nonzero) digits is 216, while the sum is 21.

The spelling of 12010031409 in words is "twelve billion, ten million, thirty-one thousand, four hundred nine".

Divisors: 1 3 4003343803 12010031409