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120031 = 294139
BaseRepresentation
bin11101010011011111
320002122121
4131103133
512320111
62323411
71006642
oct352337
9202577
10120031
11821aa
1259567
1342832
1431a59
1525871
hex1d4df

120031 has 4 divisors (see below), whose sum is σ = 124200. Its totient is φ = 115864.

The previous prime is 120017. The next prime is 120041. The reversal of 120031 is 130021.

Adding to 120031 its reverse (130021), we get a palindrome (250052).

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120031 is a prime.

It is a super-2 number, since 2×1200312 = 28814881922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 119996 and 120023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011) 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, 2041 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (31050).

2120031 is an apocalyptic number.

120031 is a deficient number, since it is larger than the sum of its proper divisors (4169).

120031 is an equidigital number, since it uses as much as digits as its factorization.

120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4168.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 120031 is about 346.4549032703. The cubic root of 120031 is about 49.3284884862.

The spelling of 120031 in words is "one hundred twenty thousand, thirty-one".

Divisors: 1 29 4139 120031