120311 has 4 divisors (see below), whose sum is σ = 124224. Its totient is φ = 116400.

The previous prime is 120299. The next prime is 120319. The reversal of 120311 is 113021.

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

It is a cyclic number.

It is not a de Polignac number, because 120311 - 2⁶ = 120247 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 120311.

It is not an unprimeable number, because it can be changed into a prime (120319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1910 + ... + 1971.

It is an arithmetic number, because the mean of its divisors is an integer number (31056).

2¹²⁰³¹¹ is an apocalyptic number.

120311 is a deficient number, since it is larger than the sum of its proper divisors (3913).

120311 is an equidigital number, since it uses as much as digits as its factorization.

120311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 120311 is about 346.8587608811. The cubic root of 120311 is about 49.3668153928.

Adding to 120311 its reverse (113021), we get a palindrome (233332).

The spelling of 120311 in words is "one hundred twenty thousand, three hundred eleven", and thus it is an iban number.