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1331120230 = 251117711829
BaseRepresentation
bin100111101010111…
…0100100001100110
310102202201220200021
41033111310201212
510211231321410
6340030305354
744662222666
oct11725644146
93382656607
101331120230
11623423370
1231195825a
13182a12b0b
14c8b021a6
157bcdaeda
hex4f574866

1331120230 has 32 divisors (see below), whose sum is σ = 2767595040. Its totient is φ = 455569920.

The previous prime is 1331120207. The next prime is 1331120237. The reversal of 1331120230 is 320211331.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331120237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354045 + ... + 357784.

It is an arithmetic number, because the mean of its divisors is an integer number (86487345).

Almost surely, 21331120230 is an apocalyptic number.

1331120230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331120230 is an abundant number, since it is smaller than the sum of its proper divisors (1436474810).

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

1331120230 is a wasteful number, since it uses less digits than its factorization.

1331120230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711864.

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

The square root of 1331120230 is about 36484.5204161984. The cubic root of 1331120230 is about 1100.0331202149.

Adding to 1331120230 its reverse (320211331), we get a palindrome (1651331561).

The spelling of 1331120230 in words is "one billion, three hundred thirty-one million, one hundred twenty thousand, two hundred thirty".

Divisors: 1 2 5 10 11 17 22 34 55 85 110 170 187 374 935 1870 711829 1423658 3559145 7118290 7830119 12101093 15660238 24202186 39150595 60505465 78301190 121010930 133112023 266224046 665560115 1331120230