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2012310131020 = 225718617723613
BaseRepresentation
bin11101010010000111000…
…001111101000101001100
321010101010100112022002121
4131102013001331011030
5230432202343143040
64140235325502324
7265245630614620
oct35220701750514
97111110468077
102012310131020
11706463676492
12285bba7119a4
131179b5a33077
146d57975b180
1537528aadc4a
hex1d48707d14c

2012310131020 has 48 divisors (see below), whose sum is σ = 4832140074048. Its totient is φ = 689564079360.

The previous prime is 2012310130949. The next prime is 2012310131033. The reversal of 2012310131020 is 201310132102.

It is a junction number, because it is equal to n+sod(n) for n = 2012310130985 and 2012310131003.

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 15 ways as a sum of consecutive naturals, for example, 3601267 + ... + 4122346.

It is an arithmetic number, because the mean of its divisors is an integer number (100669584876).

Almost surely, 22012310131020 is an apocalyptic number.

2012310131020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012310131020 is an abundant number, since it is smaller than the sum of its proper divisors (2819829943028).

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

2012310131020 is a wasteful number, since it uses less digits than its factorization.

2012310131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7725490 (or 7725488 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2012310131020 its reverse (201310132102), we get a palindrome (2213620263122).

The spelling of 2012310131020 in words is "two trillion, twelve billion, three hundred ten million, one hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 1861 3722 7444 9305 13027 18610 26054 37220 52108 65135 130270 260540 7723613 15447226 30894452 38618065 54065291 77236130 108130582 154472260 216261164 270326455 540652910 1081305820 14373643793 28747287586 57494575172 71868218965 100615506551 143736437930 201231013102 287472875860 402462026204 503077532755 1006155065510 2012310131020