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2131210202 = 21117191811657
BaseRepresentation
bin111111100000111…
…1010111111011010
312111112020200210012
41333001322333122
513331042211302
6551251121522
7103545662552
oct17701727732
95445220705
102131210202
119a4015850
124b58a32a2
1327c6c7934
14163092162
15c717ea52
hex7f07afda

2131210202 has 64 divisors (see below), whose sum is σ = 3910757760. Its totient is φ = 858470400.

The previous prime is 2131210187. The next prime is 2131210231. The reversal of 2131210202 is 2020121312.

It is a happy 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, 1285358 + ... + 1287014.

It is an arithmetic number, because the mean of its divisors is an integer number (61105590).

Almost surely, 22131210202 is an apocalyptic number.

2131210202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2131210202 is a deficient number, since it is larger than the sum of its proper divisors (1779547558).

2131210202 is a wasteful number, since it uses less digits than its factorization.

2131210202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2131210202 is about 46165.0322430300. The cubic root of 2131210202 is about 1286.8919833992.

Adding to 2131210202 its reverse (2020121312), we get a palindrome (4151331514).

The spelling of 2131210202 in words is "two billion, one hundred thirty-one million, two hundred ten thousand, two hundred two".

Divisors: 1 2 11 17 19 22 34 38 181 187 209 323 362 374 418 646 1657 1991 3077 3314 3439 3553 3982 6154 6878 7106 18227 28169 31483 33847 36454 37829 56338 58463 62966 67694 75658 116926 299917 309859 346313 535211 599834 619718 643093 692626 1070422 1286186 3299087 5098589 5698423 5887321 6598174 10197178 11396846 11774642 56084479 62682653 96873191 112168958 125365306 193746382 1065605101 2131210202