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202300021231 = 711231274012243
BaseRepresentation
bin1011110001101000000…
…1010101100111101111
3201100011122011212110221
42330122001111213233
511303302301134411
6232534011312211
720421116544160
oct2743201254757
9640148155427
10202300021231
11788820a71a0
1233259a4b667
13160cc9a0b99
149b11757767
1553e034c071
hex2f1a0559ef

202300021231 has 64 divisors (see below), whose sum is σ = 266036576256. Its totient is φ = 149155776000.

The previous prime is 202300021211. The next prime is 202300021243. The reversal of 202300021231 is 132120003202.

It is not a de Polignac number, because 202300021231 - 223 = 202291632623 is a prime.

It is a super-2 number, since 2×2023000212312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202300021211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 90190596 + ... + 90192838.

It is an arithmetic number, because the mean of its divisors is an integer number (4156821504).

Almost surely, 2202300021231 is an apocalyptic number.

202300021231 is a deficient number, since it is larger than the sum of its proper divisors (63736555025).

202300021231 is a wasteful number, since it uses less digits than its factorization.

202300021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812.

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

Adding to 202300021231 its reverse (132120003202), we get a palindrome (334420024433).

The spelling of 202300021231 in words is "two hundred two billion, three hundred million, twenty-one thousand, two hundred thirty-one".

Divisors: 1 7 11 23 77 127 161 253 401 889 1397 1771 2243 2807 2921 4411 9223 9779 15701 20447 24673 30877 32131 50927 51589 64561 101453 172711 224917 284861 356489 361123 560197 567479 710171 899443 1171321 1994027 3133471 3921379 3972353 6296101 6551803 8199247 9893873 12884531 20687189 21934297 45862621 69257111 72069833 90191717 114229261 144810323 227559079 504488831 799604827 1256521871 1592913553 2627273003 8795653097 18390911021 28900003033 202300021231