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1331130830 = 25443300481
BaseRepresentation
bin100111101010111…
…0111000111001110
310102202202110012212
41033111313013032
510211232141310
6340030430422
744662265621
oct11725670716
93382673185
101331130830
11623430327
12311962412
13182a178a3
14c8b05db8
157bcde205
hex4f5771ce

1331130830 has 16 divisors (see below), whose sum is σ = 2401452144. Its totient is φ = 531248640.

The previous prime is 1331130799. The next prime is 1331130869. The reversal of 1331130830 is 380311331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1331130796 and 1331130805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145811 + ... + 154670.

It is an arithmetic number, because the mean of its divisors is an integer number (150090759).

Almost surely, 21331130830 is an apocalyptic number.

1331130830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331130830 is a deficient number, since it is larger than the sum of its proper divisors (1070321314).

1331130830 is a wasteful number, since it uses less digits than its factorization.

1331130830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300931.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1331130830 is about 36484.6656829962. The cubic root of 1331130830 is about 1100.0360401415.

The spelling of 1331130830 in words is "one billion, three hundred thirty-one million, one hundred thirty thousand, eight hundred thirty".

Divisors: 1 2 5 10 443 886 2215 4430 300481 600962 1502405 3004810 133113083 266226166 665565415 1331130830