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10102131988 = 2213194271769
BaseRepresentation
bin10010110100010001…
…00100110100010100
3222002000221110212121
421122020210310110
5131142121210423
64350231425324
7505224463564
oct113210446424
928060843777
1010102131988
114314432313
121b5b225244
13c4cbc94c0
146bb94ada4
153e1d3445d
hex25a224d14

10102131988 has 12 divisors (see below), whose sum is σ = 19038633460. Its totient is φ = 4662522432.

The previous prime is 10102131971. The next prime is 10102131997. The reversal of 10102131988 is 88913120101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2801796624 + 7300335364 = 52932^2 + 85442^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97135833 + ... + 97135936.

Almost surely, 210102131988 is an apocalyptic number.

It is an amenable number.

10102131988 is a deficient number, since it is larger than the sum of its proper divisors (8936501472).

10102131988 is a wasteful number, since it uses less digits than its factorization.

10102131988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194271786 (or 194271784 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 34.

The spelling of 10102131988 in words is "ten billion, one hundred two million, one hundred thirty-one thousand, nine hundred eighty-eight".

Divisors: 1 2 4 13 26 52 194271769 388543538 777087076 2525532997 5051065994 10102131988