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3131034085 = 54124416257
BaseRepresentation
bin1011101010011111…
…1100100111100101
322002012121000022101
42322213330213211
522403021042320
61234404532101
7140406231154
oct27247744745
98065530271
103131034085
111367429283
127346b1031
133ab8a28ba
14219b9559b
15134d28c0a
hexba9fc9e5

3131034085 has 16 divisors (see below), whose sum is σ = 3851073072. Its totient is φ = 2442342400.

The previous prime is 3131034083. The next prime is 3131034113. The reversal of 3131034085 is 5804301313.

It can be written as a sum of positive squares in 8 ways, for example, as 184932801 + 2946101284 = 13599^2 + 54278^2 .

It is not a de Polignac number, because 3131034085 - 21 = 3131034083 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 (3131034083) 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, 497277 + ... + 503533.

It is an arithmetic number, because the mean of its divisors is an integer number (240692067).

Almost surely, 23131034085 is an apocalyptic number.

It is an amenable number.

3131034085 is a deficient number, since it is larger than the sum of its proper divisors (720038987).

3131034085 is a wasteful number, since it uses less digits than its factorization.

3131034085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8744.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 3131034085 is about 55955.6439065801. The cubic root of 3131034085 is about 1462.9492652439.

Adding to 3131034085 its reverse (5804301313), we get a palindrome (8935335398).

The spelling of 3131034085 in words is "three billion, one hundred thirty-one million, thirty-four thousand, eighty-five".

Divisors: 1 5 41 205 2441 6257 12205 31285 100081 256537 500405 1282685 15273337 76366685 626206817 3131034085