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2681331205 = 5721719311093
BaseRepresentation
bin1001111111010001…
…1101111000000101
320220212101201221011
42133310131320011
520442410044310
61122022122221
7123305640100
oct23764357005
96825351834
102681331205
1111565a5903
12629b80371
1333967b217
141b6173737
1510a5e878a
hex9fd1de05

2681331205 has 96 divisors (see below), whose sum is σ = 4310184960. Its totient is φ = 1585059840.

The previous prime is 2681331203. The next prime is 2681331253. The reversal of 2681331205 is 5021331862.

It is not a de Polignac number, because 2681331205 - 21 = 2681331203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681331203) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2452639 + ... + 2453731.

It is an arithmetic number, because the mean of its divisors is an integer number (44897760).

Almost surely, 22681331205 is an apocalyptic number.

It is an amenable number.

2681331205 is a deficient number, since it is larger than the sum of its proper divisors (1628853755).

2681331205 is a wasteful number, since it uses less digits than its factorization.

2681331205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1172 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2681331205 is about 51781.5720599520. The cubic root of 2681331205 is about 1389.2598590555.

The spelling of 2681331205 in words is "two billion, six hundred eighty-one million, three hundred thirty-one thousand, two hundred five".

Divisors: 1 5 7 17 19 31 35 49 85 95 119 133 155 217 245 323 527 589 595 665 833 931 1085 1093 1519 1615 2261 2635 2945 3689 4123 4165 4655 5465 7595 7651 10013 11305 15827 18445 18581 20615 20767 25823 28861 33883 38255 50065 53557 70091 79135 92905 103835 129115 130067 144305 145369 169415 237181 267785 350455 353039 490637 576011 643777 650335 726845 910469 1017583 1185905 1660267 1765195 2453185 2471273 2880055 3218885 4032077 4506439 4552345 5087915 8301335 10944209 12356365 17298911 20160385 22532195 28224539 31545073 54721045 76609463 86494555 141122695 157725365 383047315 536266241 2681331205