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2130031210020 = 2235779193332623
BaseRepresentation
bin11110111111101111110…
…000001110111000100100
321112121222112111201200120
4132333233300032320210
5234344300442210040
64310304533041540
7306614105360520
oct36775760167044
97477875451616
102130031210020
117513830a751a
122a49931862b0
13125b26a4586c
1475146160d80
153a6189587d0
hex1efefc0ee24

2130031210020 has 192 divisors, whose sum is σ = 6938164101120. Its totient is φ = 478209318912.

The previous prime is 2130031210019. The next prime is 2130031210051. The reversal of 2130031210020 is 200121300312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6237429 + ... + 6570051.

It is an arithmetic number, because the mean of its divisors is an integer number (36136271360).

Almost surely, 22130031210020 is an apocalyptic number.

2130031210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2130031210020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3469082050560).

2130031210020 is an abundant number, since it is smaller than the sum of its proper divisors (4808132891100).

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

2130031210020 is a wasteful number, since it uses less digits than its factorization.

2130031210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332914 (or 332912 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 2130031210020 its reverse (200121300312), we get a palindrome (2330152510332).

The spelling of 2130031210020 in words is "two trillion, one hundred thirty billion, thirty-one million, two hundred ten thousand, twenty".