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3131082871 = 714915719121
BaseRepresentation
bin1011101010100000…
…1000100001110111
322002012200111020021
42322220020201313
522403024122441
61234405550011
7140406523330
oct27250104167
98065614207
103131082871
1113674619a4
12734715307
133ab8bbb77
14219ba9287
15134d383d1
hexbaa08877

3131082871 has 16 divisors (see below), whose sum is σ = 3625531200. Its totient is φ = 2648655360.

The previous prime is 3131082841. The next prime is 3131082893. The reversal of 3131082871 is 1782801313.

It is a cyclic number.

It is not a de Polignac number, because 3131082871 - 219 = 3130558583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131082821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154191 + ... + 173311.

It is an arithmetic number, because the mean of its divisors is an integer number (226595700).

Almost surely, 23131082871 is an apocalyptic number.

3131082871 is a deficient number, since it is larger than the sum of its proper divisors (494448329).

3131082871 is a wasteful number, since it uses less digits than its factorization.

3131082871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19434.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 3131082871 is about 55956.0798394598. The cubic root of 3131082871 is about 1462.9568634868.

The spelling of 3131082871 in words is "three billion, one hundred thirty-one million, eighty-two thousand, eight hundred seventy-one".

Divisors: 1 7 149 157 1043 1099 19121 23393 133847 163751 2849029 3001997 19943203 21013979 447297553 3131082871