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10869431 = 83130957
BaseRepresentation
bin101001011101…
…101010110111
3202110020001112
4221131222313
510240310211
61024545235
7161250206
oct51355267
922406045
1010869431
116154401
12378221b
132337521
14162d23d
15e4a88b
hexa5dab7

10869431 has 4 divisors (see below), whose sum is σ = 11000472. Its totient is φ = 10738392.

The previous prime is 10869427. The next prime is 10869449. The reversal of 10869431 is 13496801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13496801 = 26875023.

It is a cyclic number.

It is not a de Polignac number, because 10869431 - 22 = 10869427 is a prime.

It is a super-2 number, since 2×108694312 = 236289060527522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10869451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65396 + ... + 65561.

It is an arithmetic number, because the mean of its divisors is an integer number (2750118).

Almost surely, 210869431 is an apocalyptic number.

10869431 is a deficient number, since it is larger than the sum of its proper divisors (131041).

10869431 is an equidigital number, since it uses as much as digits as its factorization.

10869431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131040.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 10869431 is about 3296.8820118409. The cubic root of 10869431 is about 221.5145562301.

The spelling of 10869431 in words is "ten million, eight hundred sixty-nine thousand, four hundred thirty-one".

Divisors: 1 83 130957 10869431