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1244004431 is a prime number
BaseRepresentation
bin100101000100110…
…0000000001001111
310012200210222021012
41022021200001033
510021431120211
6323235155435
742553602035
oct11211400117
93180728235
101244004431
11589231a3a
122a8745b7b
1316a9608c7
14bb306555
157432dd8b
hex4a26004f

1244004431 has 2 divisors, whose sum is σ = 1244004432. Its totient is φ = 1244004430.

The previous prime is 1244004409. The next prime is 1244004469. The reversal of 1244004431 is 1344004421.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1344004421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244004431 - 214 = 1243988047 is a prime.

It is a super-2 number, since 2×12440044312 = 3095094048695267522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1244004397 and 1244004406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244004401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622002215 + 622002216.

It is an arithmetic number, because the mean of its divisors is an integer number (622002216).

Almost surely, 21244004431 is an apocalyptic number.

1244004431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244004431 is an equidigital number, since it uses as much as digits as its factorization.

1244004431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1244004431 is about 35270.4469917805. The cubic root of 1244004431 is about 1075.4923091380.

Adding to 1244004431 its reverse (1344004421), we get a palindrome (2588008852).

The spelling of 1244004431 in words is "one billion, two hundred forty-four million, four thousand, four hundred thirty-one".