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2002213231 is a prime number
BaseRepresentation
bin111011101010111…
…0101100101101111
312011112111222012121
41313111311211233
513100031310411
6530402213411
7100421350234
oct16725654557
95145458177
102002213231
11938219487
1247a654267
1325ba70875
1414dcb378b
15bab9d571
hex7757596f

2002213231 has 2 divisors, whose sum is σ = 2002213232. Its totient is φ = 2002213230.

The previous prime is 2002213223. The next prime is 2002213247. The reversal of 2002213231 is 1323122002.

It is an a-pointer prime, because the next prime (2002213247) can be obtained adding 2002213231 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2002213231 - 23 = 2002213223 is a prime.

It is a super-2 number, since 2×20022132312 = 8017715644782918722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002223231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001106615 + 1001106616.

It is an arithmetic number, because the mean of its divisors is an integer number (1001106616).

Almost surely, 22002213231 is an apocalyptic number.

2002213231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002213231 is an equidigital number, since it uses as much as digits as its factorization.

2002213231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2002213231 is about 44746.0973829003. The cubic root of 2002213231 is about 1260.3856279548.

Adding to 2002213231 its reverse (1323122002), we get a palindrome (3325335233).

The spelling of 2002213231 in words is "two billion, two million, two hundred thirteen thousand, two hundred thirty-one".