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131213203302 = 231912714091033
BaseRepresentation
bin111101000110011101…
…0101001011101100110
3110112200110210100200110
41322030322221131212
54122211040001202
6140140054153450
712323404553136
oct1721472513546
9415613710613
10131213203302
1150713483795
122151b052886
13c4b133c8cc
1464ca674ac6
15362e60b26c
hex1e8cea9766

131213203302 has 64 divisors (see below), whose sum is σ = 265678110720. Its totient is φ = 43200345600.

The previous prime is 131213203243. The next prime is 131213203313. The reversal of 131213203302 is 203302312131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127020978 + ... + 127022010.

It is an arithmetic number, because the mean of its divisors is an integer number (4151220480).

Almost surely, 2131213203302 is an apocalyptic number.

131213203302 is an abundant number, since it is smaller than the sum of its proper divisors (134464907418).

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

131213203302 is a wasteful number, since it uses less digits than its factorization.

131213203302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 131213203302 its reverse (203302312131), we get a palindrome (334515515433).

The spelling of 131213203302 in words is "one hundred thirty-one billion, two hundred thirteen million, two hundred three thousand, three hundred two".

Divisors: 1 2 3 6 191 271 382 409 542 573 813 818 1033 1146 1227 1626 2066 2454 3099 6198 51761 78119 103522 110839 155283 156238 197303 221678 234357 279943 310566 332517 394606 422497 468714 559886 591909 665034 839829 844994 1183818 1267491 1679658 2534982 21170249 42340498 53469113 63510747 80696927 106938226 114496687 127021494 160407339 161393854 228993374 242090781 320814678 343490061 484181562 686980122 21868867217 43737734434 65606601651 131213203302