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83131013684 = 22434710283401
BaseRepresentation
bin100110101101011111…
…1101001101000110100
321221120112200001022202
41031122333221220310
52330223014414214
6102105002044032
76002030646245
oct1153277515064
9257515601282
1083131013684
113228a320aa4
12141404a9618
137aba9cb334
144048926ccc
1522682e16de
hex135afe9a34

83131013684 has 24 divisors (see below), whose sum is σ = 152029815168. Its totient is φ = 39735057600.

The previous prime is 83131013597. The next prime is 83131013687. The reversal of 83131013684 is 48631013138.

It is a super-2 number, since 2×831310136842 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83131013687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5133617 + ... + 5149784.

It is an arithmetic number, because the mean of its divisors is an integer number (6334575632).

Almost surely, 283131013684 is an apocalyptic number.

It is an amenable number.

83131013684 is a deficient number, since it is larger than the sum of its proper divisors (68898801484).

83131013684 is a wasteful number, since it uses less digits than its factorization.

83131013684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10283495 (or 10283493 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 83131013684 in words is "eighty-three billion, one hundred thirty-one million, thirteen thousand, six hundred eighty-four".

Divisors: 1 2 4 43 47 86 94 172 188 2021 4042 8084 10283401 20566802 41133604 442186243 483319847 884372486 966639694 1768744972 1933279388 20782753421 41565506842 83131013684