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56386031 = 134579491
BaseRepresentation
bin1101011100011…
…0000111101111
310221002201002112
43113012013233
5103413323111
65332314235
71253162522
oct327060757
9127081075
1056386031
1129912729
1216a7297b
13b8b3020
1476babb9
154e3be8b
hex35c61ef

56386031 has 8 divisors (see below), whose sum is σ = 60862704. Its totient is φ = 51929280.

The previous prime is 56386019. The next prime is 56386067. The reversal of 56386031 is 13068365.

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

It is not a de Polignac number, because 56386031 - 214 = 56369647 is a prime.

It is a super-2 number, since 2×563860312 = 6358768983865922, 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 (56386081) 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, 1196 + ... + 10686.

It is an arithmetic number, because the mean of its divisors is an integer number (7607838).

Almost surely, 256386031 is an apocalyptic number.

56386031 is a deficient number, since it is larger than the sum of its proper divisors (4476673).

56386031 is a wasteful number, since it uses less digits than its factorization.

56386031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9961.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 56386031 is about 7509.0632571580. The cubic root of 56386031 is about 383.4633322583.

The spelling of 56386031 in words is "fifty-six million, three hundred eighty-six thousand, thirty-one".

Divisors: 1 13 457 5941 9491 123383 4337387 56386031