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83412331 = 331252001
BaseRepresentation
bin1001111100011…
…00010101101011
312210221210012121
410332030111223
5132323143311
612135452111
72031664432
oct476142553
9183853177
1083412331
11430a1a12
1223b27037
1314386612
14b114119
1574c9b71
hex4f8c56b

83412331 has 4 divisors (see below), whose sum is σ = 83664664. Its totient is φ = 83160000.

The previous prime is 83412317. The next prime is 83412349. The reversal of 83412331 is 13321438.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83412331 - 215 = 83379563 is a prime.

It is a super-2 number, since 2×834123312 = 13915233925707122, 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 = 83412296 and 83412305.

It is not an unprimeable number, because it can be changed into a prime (83410331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125670 + ... + 126331.

It is an arithmetic number, because the mean of its divisors is an integer number (20916166).

Almost surely, 283412331 is an apocalyptic number.

83412331 is a deficient number, since it is larger than the sum of its proper divisors (252333).

83412331 is a wasteful number, since it uses less digits than its factorization.

83412331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252332.

The product of its digits is 1728, while the sum is 25.

The square root of 83412331 is about 9133.0351472005. The cubic root of 83412331 is about 436.9282104143.

Adding to 83412331 its reverse (13321438), we get a palindrome (96733769).

The spelling of 83412331 in words is "eighty-three million, four hundred twelve thousand, three hundred thirty-one".

Divisors: 1 331 252001 83412331