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200000311 = 7213612999
BaseRepresentation
bin10111110101111…
…00001100110111
3111221100001211221
423322330030313
5402200002221
631502411211
74645655200
oct1372741467
9457301757
10200000311
11a2993215
1256b90b07
13325874a4
141c7c25a7
1512859541
hexbebc337

200000311 has 12 divisors (see below), whose sum is σ = 232902000. Its totient is φ = 171245760.

The previous prime is 200000299. The next prime is 200000321. The reversal of 200000311 is 113000002.

It is not a de Polignac number, because 200000311 - 27 = 200000183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200000294 and 200000303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65190 + ... + 68188.

It is an arithmetic number, because the mean of its divisors is an integer number (19408500).

Almost surely, 2200000311 is an apocalyptic number.

200000311 is a deficient number, since it is larger than the sum of its proper divisors (32901689).

200000311 is a wasteful number, since it uses less digits than its factorization.

200000311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374 (or 4367 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 200000311 is about 14142.1466192371. The cubic root of 200000311 is about 584.8038507656.

Adding to 200000311 its reverse (113000002), we get a palindrome (313000313).

The spelling of 200000311 in words is "two hundred million, three hundred eleven", and thus it is an aban number.

Divisors: 1 7 49 1361 2999 9527 20993 66689 146951 4081639 28571473 200000311