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207671431 = 1131360317
BaseRepresentation
bin11000110000011…
…01000010000111
3112110202210122111
430120031002013
5411130441211
632335041451
75101115032
oct1430150207
9473683574
10207671431
11a7252690
1259670287
1334042006
141d81c019
1513372421
hexc60d087

207671431 has 8 divisors (see below), whose sum is σ = 227278224. Its totient is φ = 188185920.

The previous prime is 207671419. The next prime is 207671459. The reversal of 207671431 is 134176702.

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 207671431 - 29 = 207670919 is a prime.

It is a super-2 number, since 2×2076714312 = 86254846507175522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 207671393 and 207671402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207671411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26716 + ... + 33601.

It is an arithmetic number, because the mean of its divisors is an integer number (28409778).

Almost surely, 2207671431 is an apocalyptic number.

207671431 is a deficient number, since it is larger than the sum of its proper divisors (19606793).

207671431 is a wasteful number, since it uses less digits than its factorization.

207671431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60641.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 207671431 is about 14410.8095192463. The cubic root of 207671431 is about 592.1870670919.

The spelling of 207671431 in words is "two hundred seven million, six hundred seventy-one thousand, four hundred thirty-one".

Divisors: 1 11 313 3443 60317 663487 18879221 207671431