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231113986 = 21944313729
BaseRepresentation
bin11011100011010…
…00010100000010
3121002212210210021
431301220110002
5433131121421
634533324054
75504302465
oct1561502402
9532783707
10231113986
111095043a4
126549662a
1338b5c34c
14229a12dc
1515453341
hexdc68502

231113986 has 16 divisors (see below), whose sum is σ = 365767200. Its totient is φ = 109219968.

The previous prime is 231113977. The next prime is 231114029. The reversal of 231113986 is 689311132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9970 + ... + 23698.

It is an arithmetic number, because the mean of its divisors is an integer number (22860450).

Almost surely, 2231113986 is an apocalyptic number.

231113986 is a deficient number, since it is larger than the sum of its proper divisors (134653214).

231113986 is a wasteful number, since it uses less digits than its factorization.

231113986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14193.

The product of its digits is 7776, while the sum is 34.

The square root of 231113986 is about 15202.4335551911. The cubic root of 231113986 is about 613.6801500890.

The spelling of 231113986 in words is "two hundred thirty-one million, one hundred thirteen thousand, nine hundred eighty-six".

Divisors: 1 2 19 38 443 886 8417 13729 16834 27458 260851 521702 6081947 12163894 115556993 231113986