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213142302020 = 22530559348739
BaseRepresentation
bin1100011010000001000…
…1010110110101000100
3202101011020211210122002
43012200101112311010
511443003412131040
6241525523124432
721253602450224
oct3064021266504
9671136753562
10213142302020
118243630022a
1235384b13718
131713a025c4b
14a45d6d0084
155827134a15
hex31a0456d44

213142302020 has 24 divisors (see below), whose sum is σ = 447614764800. Its totient is φ = 85253886432.

The previous prime is 213142302013. The next prime is 213142302029. The reversal of 213142302020 is 20203241312.

213142302020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 213142301983 and 213142302001.

It is not an unprimeable number, because it can be changed into a prime (213142302029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436811 + ... + 785549.

It is an arithmetic number, because the mean of its divisors is an integer number (18650615200).

Almost surely, 2213142302020 is an apocalyptic number.

213142302020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213142302020 is an abundant number, since it is smaller than the sum of its proper divisors (234472462780).

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

213142302020 is a wasteful number, since it uses less digits than its factorization.

213142302020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379307 (or 379305 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 213142302020 its reverse (20203241312), we get a palindrome (233345543332).

The spelling of 213142302020 in words is "two hundred thirteen billion, one hundred forty-two million, three hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 30559 61118 122236 152795 305590 348739 611180 697478 1394956 1743695 3487390 6974780 10657115101 21314230202 42628460404 53285575505 106571151010 213142302020