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21342032347 is a prime number
BaseRepresentation
bin10011111000000101…
…011001000111011011
32001002100210120112111
4103320011121013123
5322202030013342
613445425453151
71353606165436
oct237005310733
961070716474
1021342032347
119062025869
1241774a11b7
13202173b50c
14106662881d
1584d9b0217
hex4f81591db

21342032347 has 2 divisors, whose sum is σ = 21342032348. Its totient is φ = 21342032346.

The previous prime is 21342032317. The next prime is 21342032353. The reversal of 21342032347 is 74323024312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21342032347 - 215 = 21341999579 is a prime.

It is not a weakly prime, because it can be changed into another prime (21342032317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671016173 + 10671016174.

It is an arithmetic number, because the mean of its divisors is an integer number (10671016174).

Almost surely, 221342032347 is an apocalyptic number.

21342032347 is a deficient number, since it is larger than the sum of its proper divisors (1).

21342032347 is an equidigital number, since it uses as much as digits as its factorization.

21342032347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 31.

Adding to 21342032347 its reverse (74323024312), we get a palindrome (95665056659).

The spelling of 21342032347 in words is "twenty-one billion, three hundred forty-two million, thirty-two thousand, three hundred forty-seven".