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12100331 = 197239257
BaseRepresentation
bin101110001010…
…001011101011
3211202202112102
4232022023223
511044202311
61111204015
7204564635
oct56121353
924682472
1012100331
116915181
12407660b
132678879
14186da55
1510e043b
hexb8a2eb

12100331 has 8 divisors (see below), whose sum is σ = 12260160. Its totient is φ = 11941888.

The previous prime is 12100327. The next prime is 12100343. The reversal of 12100331 is 13300121.

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 12100331 - 22 = 12100327 is a prime.

It is a super-2 number, since 2×121003312 = 292836020619122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12100381) 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 7 ways as a sum of consecutive naturals, for example, 46955 + ... + 47211.

It is an arithmetic number, because the mean of its divisors is an integer number (1532520).

Almost surely, 212100331 is an apocalyptic number.

12100331 is a deficient number, since it is larger than the sum of its proper divisors (159829).

12100331 is a wasteful number, since it uses less digits than its factorization.

12100331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 12100331 is about 3478.5530037646. The cubic root of 12100331 is about 229.5791358359.

Adding to 12100331 its reverse (13300121), we get a palindrome (25400452).

The spelling of 12100331 in words is "twelve million, one hundred thousand, three hundred thirty-one".

Divisors: 1 197 239 257 47083 50629 61423 12100331