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20201203210331 = 1113627722505521
BaseRepresentation
bin1001001011111011101011…
…00010101001100001011011
32122112012211120210121102202
410211331311202221201123
510121434031010212311
6110544145445120415
74153326435054503
oct445756542514133
978465746717382
1020201203210331
116489311627a40
1223231660b910b
13b36c7197c690
144dba5a066a03
1525072dc7be3b
hex125f758a985b

20201203210331 has 16 divisors (see below), whose sum is σ = 23736664075488. Its totient is φ = 16949357222400.

The previous prime is 20201203210319. The next prime is 20201203210337. The reversal of 20201203210331 is 13301230210202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20201203210331 is a prime.

It is a super-2 number, since 2×202012032103312 (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20201203210337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10355150 + ... + 12150371.

It is an arithmetic number, because the mean of its divisors is an integer number (1483541504718).

Almost surely, 220201203210331 is an apocalyptic number.

20201203210331 is a deficient number, since it is larger than the sum of its proper divisors (3535460865157).

20201203210331 is a wasteful number, since it uses less digits than its factorization.

20201203210331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22511822.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20201203210331 its reverse (13301230210202), we get a palindrome (33502433420533).

The spelling of 20201203210331 in words is "twenty trillion, two hundred one billion, two hundred three million, two hundred ten thousand, three hundred thirty-one".

Divisors: 1 11 13 143 6277 69047 81601 897611 22505521 247560731 292571773 3218289503 141267155317 1553938708487 1836473019121 20201203210331