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2431321 is a prime number
BaseRepresentation
bin1001010001100101011001
311120112010221
421101211121
51110300241
6124040041
726444254
oct11214531
94515127
102431321
111410762
12993021
13671869
1447409b
153305d1
hex251959

2431321 has 2 divisors, whose sum is σ = 2431322. Its totient is φ = 2431320.

The previous prime is 2431301. The next prime is 2431327. The reversal of 2431321 is 1231342.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1690000 + 741321 = 1300^2 + 861^2 .

It is a cyclic number.

It is not a de Polignac number, because 2431321 - 215 = 2398553 is a prime.

It is a super-2 number, since 2×24313212 = 11822643610082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2431295 and 2431304.

It is not a weakly prime, because it can be changed into another prime (2431327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215660 + 1215661.

It is an arithmetic number, because the mean of its divisors is an integer number (1215661).

22431321 is an apocalyptic number.

It is an amenable number.

2431321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2431321 is an equidigital number, since it uses as much as digits as its factorization.

2431321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 16.

The square root of 2431321 is about 1559.2693801906. The cubic root of 2431321 is about 134.4664998587.

Adding to 2431321 its reverse (1231342), we get a palindrome (3662663).

The spelling of 2431321 in words is "two million, four hundred thirty-one thousand, three hundred twenty-one".