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1030020231 = 32913818573
BaseRepresentation
bin111101011001001…
…101110010000111
32122210011110010110
4331121031302013
54102141121411
6250112524103
734345012302
oct7531156207
92583143113
101030020231
11489468499
12248b50633
1313551b436
149ab23b39
15606612a6
hex3d64dc87

1030020231 has 16 divisors (see below), whose sum is σ = 1421912160. Its totient is φ = 662444160.

The previous prime is 1030020227. The next prime is 1030020241. The reversal of 1030020231 is 1320200301.

It is a happy number.

It is not a de Polignac number, because 1030020231 - 22 = 1030020227 is a prime.

It is a super-2 number, since 2×10300202312 = 2121883352538586722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030020241) 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 15 ways as a sum of consecutive naturals, for example, 115861 + ... + 124433.

It is an arithmetic number, because the mean of its divisors is an integer number (88869510).

Almost surely, 21030020231 is an apocalyptic number.

1030020231 is a deficient number, since it is larger than the sum of its proper divisors (391891929).

1030020231 is a wasteful number, since it uses less digits than its factorization.

1030020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9986.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1030020231 is about 32093.9282575381. The cubic root of 1030020231 is about 1009.9082460843.

Adding to 1030020231 its reverse (1320200301), we get a palindrome (2350220532).

The spelling of 1030020231 in words is "one billion, thirty million, twenty thousand, two hundred thirty-one".

Divisors: 1 3 29 87 1381 4143 8573 25719 40049 120147 248617 745851 11839313 35517939 343340077 1030020231