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10231163685 = 325227359193
BaseRepresentation
bin10011000011101001…
…10010101100100101
3222102000201222002100
421201310302230211
5131423134214220
64411121202313
7511352312361
oct114164625445
928360658070
1010231163685
114380252786
121b96490399
13c70866312
146d0b382a1
153ed320d90
hex261d32b25

10231163685 has 12 divisors (see below), whose sum is σ = 17734017132. Its totient is φ = 5456620608.

The previous prime is 10231163641. The next prime is 10231163689. The reversal of 10231163685 is 58636113201.

10231163685 is a `hidden beast` number, since 1 + 0 + 2 + 3 + 11 + 636 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8070866244 + 2160297441 = 89838^2 + 46479^2 .

It is not a de Polignac number, because 10231163685 - 210 = 10231162661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10231163689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113679552 + ... + 113679641.

It is an arithmetic number, because the mean of its divisors is an integer number (1477834761).

Almost surely, 210231163685 is an apocalyptic number.

10231163685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10231163685 is a deficient number, since it is larger than the sum of its proper divisors (7502853447).

10231163685 is a wasteful number, since it uses less digits than its factorization.

10231163685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227359204 (or 227359201 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 10231163685 its reverse (58636113201), we get a palindrome (68867276886).

The spelling of 10231163685 in words is "ten billion, two hundred thirty-one million, one hundred sixty-three thousand, six hundred eighty-five".

Divisors: 1 3 5 9 15 45 227359193 682077579 1136795965 2046232737 3410387895 10231163685