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202031200231 = 7216012575319
BaseRepresentation
bin1011110000100111111…
…1110111011111100111
3201022110220100100101121
42330021333313133213
511302224441401411
6232451205434411
720411343603400
oct2741177673747
9638426310347
10202031200231
1178754388a83
12331a3a0ba07
131608909b8c3
149ac7b7c9a7
1553c694b571
hex2f09ff77e7

202031200231 has 12 divisors (see below), whose sum is σ = 235162770480. Its totient is φ = 173061369600.

The previous prime is 202031200223. The next prime is 202031200247. The reversal of 202031200231 is 132002130202.

It is not a de Polignac number, because 202031200231 - 23 = 202031200223 is a prime.

It is a super-2 number, since 2×2020312002312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202031200201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1209211 + ... + 1366108.

It is an arithmetic number, because the mean of its divisors is an integer number (19596897540).

Almost surely, 2202031200231 is an apocalyptic number.

202031200231 is a deficient number, since it is larger than the sum of its proper divisors (33131570249).

202031200231 is a wasteful number, since it uses less digits than its factorization.

202031200231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576934 (or 2576927 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 202031200231 its reverse (132002130202), we get a palindrome (334033330433).

The spelling of 202031200231 in words is "two hundred two billion, thirty-one million, two hundred thousand, two hundred thirty-one".

Divisors: 1 7 49 1601 11207 78449 2575319 18027233 126190631 4123085719 28861600033 202031200231