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71414231 = 726338791
BaseRepresentation
bin1000100000110…
…11000111010111
311222101012220112
410100123013113
5121240223411
611030353235
71525003520
oct420330727
9158335815
1071414231
1137347629
121babb81b
1311a45455
1496ad847
156409b8b
hex441b1d7

71414231 has 8 divisors (see below), whose sum is σ = 81928704. Its totient is φ = 60977880.

The previous prime is 71414177. The next prime is 71414237. The reversal of 71414231 is 13241417.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71414231 - 222 = 67219927 is a prime.

It is a super-2 number, since 2×714142312 = 10199984778642722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71414197 and 71414206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71414237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17555 + ... + 21236.

It is an arithmetic number, because the mean of its divisors is an integer number (10241088).

Almost surely, 271414231 is an apocalyptic number.

71414231 is a deficient number, since it is larger than the sum of its proper divisors (10514473).

71414231 is a wasteful number, since it uses less digits than its factorization.

71414231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39061.

The product of its digits is 672, while the sum is 23.

The square root of 71414231 is about 8450.6941135033. The cubic root of 71414231 is about 414.8854979991.

Adding to 71414231 its reverse (13241417), we get a palindrome (84655648).

The spelling of 71414231 in words is "seventy-one million, four hundred fourteen thousand, two hundred thirty-one".

Divisors: 1 7 263 1841 38791 271537 10202033 71414231