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71474231 is a prime number
BaseRepresentation
bin1000100001010…
…01110000110111
311222111021012202
410100221300313
5121244133411
611031535115
71525343453
oct420516067
9158437182
1071474231
1137388714
121bb2a49b
1311a6685a
1496c7663
15641c83b
hex4429c37

71474231 has 2 divisors, whose sum is σ = 71474232. Its totient is φ = 71474230.

The previous prime is 71474201. The next prime is 71474279. The reversal of 71474231 is 13247417.

It is a weak prime.

It is an emirp because it is prime and its reverse (13247417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71474231 - 26 = 71474167 is a prime.

It is a super-2 number, since 2×714742312 = 10217131394082722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71474194 and 71474203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71474201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35737115 + 35737116.

It is an arithmetic number, because the mean of its divisors is an integer number (35737116).

Almost surely, 271474231 is an apocalyptic number.

71474231 is a deficient number, since it is larger than the sum of its proper divisors (1).

71474231 is an equidigital number, since it uses as much as digits as its factorization.

71474231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 29.

The square root of 71474231 is about 8454.2433724136. The cubic root of 71474231 is about 415.0016567409.

The spelling of 71474231 in words is "seventy-one million, four hundred seventy-four thousand, two hundred thirty-one".