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312104211 = 3104034737
BaseRepresentation
bin10010100110100…
…101010100010011
3210202021112111020
4102212211110103
51114344313321
650545250523
710506561546
oct2246452423
9722245436
10312104211
111501a1571
1288633a43
134c878363
142d64485d
151c6004c6
hex129a5513

312104211 has 4 divisors (see below), whose sum is σ = 416138952. Its totient is φ = 208069472.

The previous prime is 312104201. The next prime is 312104231. The reversal of 312104211 is 112401213.

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 312104211 - 27 = 312104083 is a prime.

It is a super-3 number, since 3×3121042113 (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (312104201) 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, 52017366 + ... + 52017371.

It is an arithmetic number, because the mean of its divisors is an integer number (104034738).

Almost surely, 2312104211 is an apocalyptic number.

312104211 is a deficient number, since it is larger than the sum of its proper divisors (104034741).

312104211 is a wasteful number, since it uses less digits than its factorization.

312104211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104034740.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 312104211 is about 17666.4713794238. The cubic root of 312104211 is about 678.3177933457.

Adding to 312104211 its reverse (112401213), we get a palindrome (424505424).

The spelling of 312104211 in words is "three hundred twelve million, one hundred four thousand, two hundred eleven".

Divisors: 1 3 104034737 312104211