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3131102061 = 34436071481
BaseRepresentation
bin1011101010100000…
…1101001101101101
322002012201110120000
42322220031031231
522403030231221
61234410214513
7140406633303
oct27250151555
98065643500
103131102061
11136747535a
12734724439
133ab8c7819
14219bb2273
15134d3de26
hexbaa0d36d

3131102061 has 40 divisors (see below), whose sum is σ = 4797222144. Its totient is φ = 2034123840.

The previous prime is 3131101999. The next prime is 3131102077. The reversal of 3131102061 is 1602011313.

It is not a de Polignac number, because 3131102061 - 27 = 3131101933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131102081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2113441 + ... + 2114921.

Almost surely, 23131102061 is an apocalyptic number.

It is an amenable number.

3131102061 is a deficient number, since it is larger than the sum of its proper divisors (1666120083).

3131102061 is a wasteful number, since it uses less digits than its factorization.

3131102061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143 (or 2134 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 3131102061 is about 55956.2513129677. The cubic root of 3131102061 is about 1462.9598522382.

Adding to 3131102061 its reverse (1602011313), we get a palindrome (4733113374).

The spelling of 3131102061 in words is "three billion, one hundred thirty-one million, one hundred two thousand, sixty-one".

Divisors: 1 3 9 27 43 81 129 387 607 1161 1481 1821 3483 4443 5463 13329 16389 26101 39987 49167 63683 78303 119961 191049 234909 573147 704727 898967 1719441 2114181 2696901 5158323 8090703 24272109 38655581 72816327 115966743 347900229 1043700687 3131102061