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10031220213 = 374361182111
BaseRepresentation
bin10010101011110100…
…00100010111110101
3221220002111210012120
421111322010113311
5131020443021323
64335215510153
7503403651660
oct112572042765
927802453176
1010031220213
1142883a9243
121b3b528359
13c3b2cb981
146b236c6d7
153da9c85e3
hex255e845f5

10031220213 has 32 divisors (see below), whose sum is σ = 15897649152. Its totient is φ = 5507006400.

The previous prime is 10031220211. The next prime is 10031220223. The reversal of 10031220213 is 31202213001.

It is not a de Polignac number, because 10031220213 - 21 = 10031220211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10031220192 and 10031220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031220211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35973 + ... + 146138.

It is an arithmetic number, because the mean of its divisors is an integer number (496801536).

Almost surely, 210031220213 is an apocalyptic number.

It is an amenable number.

10031220213 is a deficient number, since it is larger than the sum of its proper divisors (5866428939).

10031220213 is a wasteful number, since it uses less digits than its factorization.

10031220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182225.

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

Adding to 10031220213 its reverse (31202213001), we get a palindrome (41233433214).

The spelling of 10031220213 in words is "ten billion, thirty-one million, two hundred twenty thousand, two hundred thirteen".

Divisors: 1 3 7 21 43 61 129 183 301 427 903 1281 2623 7869 18361 55083 182111 546333 1274777 3824331 7830773 11108771 23492319 33326313 54815411 77761397 164446233 233284191 477677153 1433031459 3343740071 10031220213