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200220031 = 1122957059
BaseRepresentation
bin10111110111100…
…01110101111111
3111221202020020201
423323301311333
5402224020111
631511224331
74650561604
oct1373616577
9457666221
10200220031
11a3023300
12570780a7
13326334bb
141c83c6ab
151289e6c1
hexbef1d7f

200220031 has 12 divisors (see below), whose sum is σ = 227669400. Its totient is φ = 175738640.

The previous prime is 200220023. The next prime is 200220073. The reversal of 200220031 is 130022002.

It is not a de Polignac number, because 200220031 - 23 = 200220023 is a prime.

It is a super-2 number, since 2×2002200312 = 80176121627281922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200220001) 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, 25021 + ... + 32038.

It is an arithmetic number, because the mean of its divisors is an integer number (18972450).

Almost surely, 2200220031 is an apocalyptic number.

200220031 is a deficient number, since it is larger than the sum of its proper divisors (27449369).

200220031 is a wasteful number, since it uses less digits than its factorization.

200220031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57110 (or 57099 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 200220031 is about 14149.9127559148. The cubic root of 200220031 is about 585.0179272272.

Adding to 200220031 its reverse (130022002), we get a palindrome (330242033).

The spelling of 200220031 in words is "two hundred million, two hundred twenty thousand, thirty-one".

Divisors: 1 11 29 121 319 3509 57059 627649 1654711 6904139 18201821 200220031