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1031212230 = 235132126021
BaseRepresentation
bin111101011101110…
…000110011000110
32122212102000020120
4331131300303012
54102442242410
6250154242410
734361105436
oct7535606306
92585360216
101031212230
1148a102014
12249426406
13135847b69
149ad542c6
15607e9570
hex3d770cc6

1031212230 has 32 divisors (see below), whose sum is σ = 2476878048. Its totient is φ = 274771200.

The previous prime is 1031212211. The next prime is 1031212261. The reversal of 1031212230 is 322121301.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 26620 + ... + 52640.

It is an arithmetic number, because the mean of its divisors is an integer number (77402439).

Almost surely, 21031212230 is an apocalyptic number.

1031212230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1031212230 is an abundant number, since it is smaller than the sum of its proper divisors (1445665818).

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

1031212230 is a wasteful number, since it uses less digits than its factorization.

1031212230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27352.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1031212230 is about 32112.4933631756. The cubic root of 1031212230 is about 1010.2976706506.

Adding to 1031212230 its reverse (322121301), we get a palindrome (1353333531).

The spelling of 1031212230 in words is "one billion, thirty-one million, two hundred twelve thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 1321 2642 3963 6605 7926 13210 19815 26021 39630 52042 78063 130105 156126 260210 390315 780630 34373741 68747482 103121223 171868705 206242446 343737410 515606115 1031212230