Search a number
-
+
120231 = 336173
BaseRepresentation
bin11101010110100111
320002221000
4131112213
512321411
62324343
71010346
oct352647
9202830
10120231
1182371
12596b3
1342957
1431b5d
1525956
hex1d5a7

120231 has 16 divisors (see below), whose sum is σ = 183520. Its totient is φ = 77760.

The previous prime is 120223. The next prime is 120233. The reversal of 120231 is 132021.

It is a happy number.

It is not a de Polignac number, because 120231 - 23 = 120223 is a prime.

It is a super-2 number, since 2×1202312 = 28910986722, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1611 + ... + 1683.

It is an arithmetic number, because the mean of its divisors is an integer number (11470).

2120231 is an apocalyptic number.

120231 is a deficient number, since it is larger than the sum of its proper divisors (63289).

120231 is an equidigital number, since it uses as much as digits as its factorization.

120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 120231 is about 346.7434209902. The cubic root of 120231 is about 49.3558709213.

Adding to 120231 its reverse (132021), we get a palindrome (252252).

It can be divided in two parts, 120 and 231, that added together give a triangular number (351 = T26).

The spelling of 120231 in words is "one hundred twenty thousand, two hundred thirty-one".

Divisors: 1 3 9 27 61 73 183 219 549 657 1647 1971 4453 13359 40077 120231