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203212223141 = 829724492253
BaseRepresentation
bin1011110101000001100…
…1000111001010100101
3201102112012122112020212
42331100121013022211
511312134312120031
6233204315105205
720452534253024
oct2752031071245
9642465575225
10203212223141
1179200002a74
1233473442205
131621697a425
149b9a96c8bb
15544548912b
hex2f506472a5

203212223141 has 4 divisors (see below), whose sum is σ = 203236723692. Its totient is φ = 203187722592.

The previous prime is 203212223119. The next prime is 203212223143. The reversal of 203212223141 is 141322212302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 175674148225 + 27538074916 = 419135^2 + 165946^2 .

It is a cyclic number.

It is not a de Polignac number, because 203212223141 - 218 = 203211960997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203212223143) 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, 12237830 + ... + 12254423.

It is an arithmetic number, because the mean of its divisors is an integer number (50809180923).

Almost surely, 2203212223141 is an apocalyptic number.

It is an amenable number.

203212223141 is a deficient number, since it is larger than the sum of its proper divisors (24500551).

203212223141 is an equidigital number, since it uses as much as digits as its factorization.

203212223141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24500550.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 203212223141 its reverse (141322212302), we get a palindrome (344534435443).

The spelling of 203212223141 in words is "two hundred three billion, two hundred twelve million, two hundred twenty-three thousand, one hundred forty-one".

Divisors: 1 8297 24492253 203212223141