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80343431 = 7108710559
BaseRepresentation
bin1001100100111…
…11000110000111
312121011212110122
410302133012013
5131031442211
611550012155
71663623260
oct462370607
9177155418
1080343431
1141396233
1222aa705b
13138507bc
14a955967
1570c06db
hex4c9f187

80343431 has 8 divisors (see below), whose sum is σ = 91914240. Its totient is φ = 68795928.

The previous prime is 80343421. The next prime is 80343433. The reversal of 80343431 is 13434308.

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 80343431 - 210 = 80342407 is a prime.

It is a super-2 number, since 2×803434312 = 12910133809703522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80343431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80343433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2330 + ... + 12888.

It is an arithmetic number, because the mean of its divisors is an integer number (11489280).

Almost surely, 280343431 is an apocalyptic number.

80343431 is a deficient number, since it is larger than the sum of its proper divisors (11570809).

80343431 is a wasteful number, since it uses less digits than its factorization.

80343431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11653.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 80343431 is about 8963.4497265283. The cubic root of 80343431 is about 431.5026408474.

Adding to 80343431 its reverse (13434308), we get a palindrome (93777739).

The spelling of 80343431 in words is "eighty million, three hundred forty-three thousand, four hundred thirty-one".

Divisors: 1 7 1087 7609 10559 73913 11477633 80343431