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85753031 = 713942341
BaseRepresentation
bin1010001110001…
…11110011000111
312222100201001012
411013013303013
5133423044111
612301552435
72060613560
oct507076307
9188321035
1085753031
1144450581
122487571b
13149c5b50
14b563167
1577dd48b
hex51c7cc7

85753031 has 8 divisors (see below), whose sum is σ = 105542304. Its totient is φ = 67848480.

The previous prime is 85753021. The next prime is 85753033. The reversal of 85753031 is 13035758.

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

It is a de Polignac number, because none of the positive numbers 2k-85753031 is a prime.

It is a super-2 number, since 2×857530312 = 14707164651373922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85753033) 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, 471080 + ... + 471261.

It is an arithmetic number, because the mean of its divisors is an integer number (13192788).

Almost surely, 285753031 is an apocalyptic number.

85753031 is a deficient number, since it is larger than the sum of its proper divisors (19789273).

85753031 is a wasteful number, since it uses less digits than its factorization.

85753031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942361.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 85753031 is about 9260.2932458967. The cubic root of 85753031 is about 440.9775630764.

Adding to 85753031 its reverse (13035758), we get a palindrome (98788789).

The spelling of 85753031 in words is "eighty-five million, seven hundred fifty-three thousand, thirty-one".

Divisors: 1 7 13 91 942341 6596387 12250433 85753031