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31200233000 = 235331200233
BaseRepresentation
bin11101000011101011…
…011100011000101000
32222112101202001112012
4131003223130120220
51002344224424000
622155545135052
72153112414266
oct350353343050
988471661465
1031200233000
1112260799932
126068a8a488
132c32c3b641
14171d9d9436
15c291ad735
hex743adc628

31200233000 has 32 divisors (see below), whose sum is σ = 73008547560. Its totient is φ = 12480092800.

The previous prime is 31200232979. The next prime is 31200233027. The reversal of 31200233000 is 33200213.

It can be written as a sum of positive squares in 4 ways, for example, as 9742084804 + 21458148196 = 98702^2 + 146486^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15599117 + ... + 15601116.

Almost surely, 231200233000 is an apocalyptic number.

It is an amenable number.

31200233000 is an abundant number, since it is smaller than the sum of its proper divisors (41808314560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31200233000 is a wasteful number, since it uses less digits than its factorization.

31200233000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31200254 (or 31200240 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 31200233000 its reverse (33200213), we get a palindrome (31233433213).

The spelling of 31200233000 in words is "thirty-one billion, two hundred million, two hundred thirty-three thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1000 31200233 62400466 124800932 156001165 249601864 312002330 624004660 780005825 1248009320 1560011650 3120023300 3900029125 6240046600 7800058250 15600116500 31200233000