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235122001 = 351766853
BaseRepresentation
bin11100000001110…
…10110101010001
3121101102102202021
432000322311101
5440142401001
635155251441
75553334612
oct1600726521
9541372667
10235122001
111107a1704
12668a9b81
133993375a
1423325c09
1515995ba1
hexe03ad51

235122001 has 4 divisors (see below), whose sum is σ = 235192372. Its totient is φ = 235051632.

The previous prime is 235121989. The next prime is 235122007. The reversal of 235122001 is 100221532.

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 228614400 + 6507601 = 15120^2 + 2551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-235122001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235122007) 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, 29910 + ... + 36943.

It is an arithmetic number, because the mean of its divisors is an integer number (58798093).

Almost surely, 2235122001 is an apocalyptic number.

It is an amenable number.

235122001 is a deficient number, since it is larger than the sum of its proper divisors (70371).

235122001 is an equidigital number, since it uses as much as digits as its factorization.

235122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70370.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 235122001 is about 15333.6884342939. The cubic root of 235122001 is about 617.2073507146.

Adding to 235122001 its reverse (100221532), we get a palindrome (335343533).

The spelling of 235122001 in words is "two hundred thirty-five million, one hundred twenty-two thousand, one".

Divisors: 1 3517 66853 235122001