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1031212330 = 25621116603
BaseRepresentation
bin111101011101110…
…000110100101010
32122212102000101021
4331131300310222
54102442243310
6250154243054
734361105641
oct7535606452
92585360337
101031212330
1148a1020a5
1224942648a
13135847c15
149ad54358
15607e95da
hex3d770d2a

1031212330 has 16 divisors (see below), whose sum is σ = 1856592864. Its totient is φ = 412393680.

The previous prime is 1031212319. The next prime is 1031212331. The reversal of 1031212330 is 332121301.

It is not an unprimeable number, because it can be changed into a prime (1031212331) by changing a digit.

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, 53809 + ... + 70411.

It is an arithmetic number, because the mean of its divisors is an integer number (116037054).

Almost surely, 21031212330 is an apocalyptic number.

1031212330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1031212330 is a deficient number, since it is larger than the sum of its proper divisors (825380534).

1031212330 is a wasteful number, since it uses less digits than its factorization.

1031212330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22821.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1031212330 is about 32112.4949202020. The cubic root of 1031212330 is about 1010.2977033079.

Adding to 1031212330 its reverse (332121301), we get a palindrome (1363333631).

The spelling of 1031212330 in words is "one billion, thirty-one million, two hundred twelve thousand, three hundred thirty".

Divisors: 1 2 5 10 6211 12422 16603 31055 33206 62110 83015 166030 103121233 206242466 515606165 1031212330