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2144200031 = 4349865117
BaseRepresentation
bin111111111001101…
…1110010101011111
312112102200122110222
41333303132111133
513342403400111
6552433351555
7104064254021
oct17763362537
95472618428
102144200031
11a00388246
124ba1085bb
132822c531c
14164ab4011
15c83987db
hex7fcde55f

2144200031 has 4 divisors (see below), whose sum is σ = 2194065192. Its totient is φ = 2094334872.

The previous prime is 2144199997. The next prime is 2144200039. The reversal of 2144200031 is 1300024412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2144200031 - 210 = 2144199007 is a prime.

It is a super-2 number, since 2×21442000312 = 9195187545880801922, 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 = 2144199982 and 2144200009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144200039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24932516 + ... + 24932601.

It is an arithmetic number, because the mean of its divisors is an integer number (548516298).

Almost surely, 22144200031 is an apocalyptic number.

2144200031 is a deficient number, since it is larger than the sum of its proper divisors (49865161).

2144200031 is an equidigital number, since it uses as much as digits as its factorization.

2144200031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49865160.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2144200031 is about 46305.5075665951. The cubic root of 2144200031 is about 1289.5012456059.

Adding to 2144200031 its reverse (1300024412), we get a palindrome (3444224443).

The spelling of 2144200031 in words is "two billion, one hundred forty-four million, two hundred thousand, thirty-one".

Divisors: 1 43 49865117 2144200031