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56031 = 319983
BaseRepresentation
bin1101101011011111
32211212020
431223133
53243111
61111223
7322233
oct155337
984766
1056031
1139108
1228513
131c671
14165c3
1511906

56031 has 8 divisors (see below), whose sum is σ = 78720. Its totient is φ = 35352.

The previous prime is 56009. The next prime is 56039. The reversal of 56031 is 13065.

Adding to 56031 its reverse (13065), we get a palindrome (69096).

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

It is not a de Polignac number, because 56031 - 26 = 55967 is a prime.

It is a super-3 number, since 3×560313 = 527723428433373, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a plaindrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 56031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56039) 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, 435 + ... + 548.

It is an arithmetic number, because the mean of its divisors is an integer number (9840).

256031 is an apocalyptic number.

56031 is a deficient number, since it is larger than the sum of its proper divisors (22689).

56031 is a wasteful number, since it uses less digits than its factorization.

56031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 56031 is about 236.7086817166. The cubic root of 56031 is about 38.2656819802.

The spelling of 56031 in words is "fifty-six thousand, thirty-one".

Divisors: 1 3 19 57 983 2949 18677 56031