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71345351 = 7112131643
BaseRepresentation
bin1000100000010…
…10010011000111
311222020201102102
410100022103013
5121231022401
611025102315
71524265640
oct420122307
9158221372
1071345351
11372aa900
121ba8799b
1311a1ccac
1496926c7
1563e456b
hex440a4c7

71345351 has 24 divisors (see below), whose sum is σ = 90448512. Its totient is φ = 55083600.

The previous prime is 71345341. The next prime is 71345359. The reversal of 71345351 is 15354317.

It is not a de Polignac number, because 71345351 - 222 = 67151047 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71345359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110636 + ... + 111278.

It is an arithmetic number, because the mean of its divisors is an integer number (3768688).

Almost surely, 271345351 is an apocalyptic number.

71345351 is a deficient number, since it is larger than the sum of its proper divisors (19103161).

71345351 is a wasteful number, since it uses less digits than its factorization.

71345351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 792 counting only the distinct ones).

The product of its digits is 6300, while the sum is 29.

The square root of 71345351 is about 8446.6177254567. The cubic root of 71345351 is about 414.7520675172.

Adding to 71345351 its reverse (15354317), we get a palindrome (86699668).

It can be divided in two parts, 713 and 45351, that added together give a palindrome (46064).

The spelling of 71345351 in words is "seventy-one million, three hundred forty-five thousand, three hundred fifty-one".

Divisors: 1 7 11 77 121 131 643 847 917 1441 4501 7073 10087 15851 49511 77803 84233 110957 544621 589631 926563 6485941 10192193 71345351