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10128131 = 132932659
BaseRepresentation
bin100110101000…
…101100000011
3201001120011222
4212220230003
510043100011
61001025255
7152042036
oct46505403
921046158
1010128131
115798462
12348522b
132137ca0
1414b901d
15d50ddb
hex9a8b03

10128131 has 8 divisors (see below), whose sum is σ = 10948560. Its totient is φ = 9313632.

The previous prime is 10128127. The next prime is 10128137. The reversal of 10128131 is 13182101.

10128131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10128131 - 22 = 10128127 is a prime.

It is a super-2 number, since 2×101281312 = 205158075106322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10128137) 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, 2480 + ... + 5138.

It is an arithmetic number, because the mean of its divisors is an integer number (1368570).

Almost surely, 210128131 is an apocalyptic number.

10128131 is a deficient number, since it is larger than the sum of its proper divisors (820429).

10128131 is a wasteful number, since it uses less digits than its factorization.

10128131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 10128131 is about 3182.4724664952. The cubic root of 10128131 is about 216.3597329190.

The spelling of 10128131 in words is "ten million, one hundred twenty-eight thousand, one hundred thirty-one".

Divisors: 1 13 293 2659 3809 34567 779087 10128131