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50031 = 3317109
BaseRepresentation
bin1100001101101111
32112122000
430031233
53100111
61023343
7265602
oct141557
975560
1050031
1134653
1224b53
1319a07
1414339
15ec56
hexc36f

50031 has 16 divisors (see below), whose sum is σ = 79200. Its totient is φ = 31104.

The previous prime is 50023. The next prime is 50033. The reversal of 50031 is 13005.

It is not a de Polignac number, because 50031 - 23 = 50023 is a prime.

It is a super-2 number, since 2×500312 = 5006201922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 49995 and 50022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405 + ... + 513.

It is an arithmetic number, because the mean of its divisors is an integer number (4950).

250031 is an apocalyptic number.

50031 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

50031 is a deficient number, since it is larger than the sum of its proper divisors (29169).

50031 is a wasteful number, since it uses less digits than its factorization.

50031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 9.

The square root of 50031 is about 223.6761051163. The cubic root of 50031 is about 36.8479270786.

Adding to 50031 its reverse (13005), we get a palindrome (63036).

The spelling of 50031 in words is "fifty thousand, thirty-one".

Divisors: 1 3 9 17 27 51 109 153 327 459 981 1853 2943 5559 16677 50031