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197321041 = 571345571
BaseRepresentation
bin10111100001011…
…10000101010001
3111202021221120201
423300232011101
5401003233131
631325135201
74614126001
oct1360560521
9452257521
10197321041
11a1423245
12560ba501
1331b59b18
141c2c6001
15124ca761
hexbc2e151

197321041 has 4 divisors (see below), whose sum is σ = 197667184. Its totient is φ = 196974900.

The previous prime is 197321039. The next prime is 197321051. The reversal of 197321041 is 140123791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 140123791 = 373375667.

It is a cyclic number.

It is not a de Polignac number, because 197321041 - 21 = 197321039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197321051) 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 3 ways as a sum of consecutive naturals, for example, 172215 + ... + 173356.

It is an arithmetic number, because the mean of its divisors is an integer number (49416796).

Almost surely, 2197321041 is an apocalyptic number.

It is an amenable number.

197321041 is a deficient number, since it is larger than the sum of its proper divisors (346143).

197321041 is an equidigital number, since it uses as much as digits as its factorization.

197321041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346142.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 197321041 is about 14047.1008040805. The cubic root of 197321041 is about 582.1806938065.

The spelling of 197321041 in words is "one hundred ninety-seven million, three hundred twenty-one thousand, forty-one".

Divisors: 1 571 345571 197321041