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131233230030 = 23572327170441
BaseRepresentation
bin111101000111000011…
…1000010110011001110
3110112201212110211012010
41322032013002303032
54122231201330110
6140142051322050
712324040023120
oct1721607026316
9415655424163
10131233230030
1150723812101
12215258b0326
13c4b5532246
1464cd1a9210
153631265020
hex1e8e1c2cce

131233230030 has 64 divisors (see below), whose sum is σ = 375604190208. Its totient is φ = 28691984640.

The previous prime is 131233229989. The next prime is 131233230043. The reversal of 131233230030 is 30032332131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 131233229979 and 131233230006.

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 31 ways as a sum of consecutive naturals, for example, 13580391 + ... + 13590050.

It is an arithmetic number, because the mean of its divisors is an integer number (5868815472).

Almost surely, 2131233230030 is an apocalyptic number.

131233230030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131233230030 is an abundant number, since it is smaller than the sum of its proper divisors (244370960178).

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

131233230030 is a wasteful number, since it uses less digits than its factorization.

131233230030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27170481.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 131233230030 its reverse (30032332131), we get a palindrome (161265562161).

The spelling of 131233230030 in words is "one hundred thirty-one billion, two hundred thirty-three million, two hundred thirty thousand, thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 23 30 35 42 46 69 70 105 115 138 161 210 230 322 345 483 690 805 966 1610 2415 4830 27170441 54340882 81511323 135852205 163022646 190193087 271704410 380386174 407556615 570579261 624920143 815113230 950965435 1141158522 1249840286 1874760429 1901930870 2852896305 3124600715 3749520858 4374441001 5705792610 6249201430 8748882002 9373802145 13123323003 18747604290 21872205005 26246646006 43744410010 65616615015 131233230030