3120420311 has 4 divisors (see below), whose sum is σ = 3121076952. Its totient is φ = 3119763672.

The previous prime is 3120420301. The next prime is 3120420319. The reversal of 3120420311 is 1130240213.

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 2^k-3120420311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3120420311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120420319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321140 + ... + 330713.

It is an arithmetic number, because the mean of its divisors is an integer number (780269238).

Almost surely, 2^3120420311 is an apocalyptic number.

3120420311 is a deficient number, since it is larger than the sum of its proper divisors (656641).

3120420311 is an equidigital number, since it uses as much as digits as its factorization.

3120420311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656640.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3120420311 is about 55860.7224353570. The cubic root of 3120420311 is about 1461.2943283729.

Adding to 3120420311 its reverse (1130240213), we get a palindrome (4250660524).

It can be divided in two parts, 31204 and 20311, that added together give a palindrome (51515).

The spelling of 3120420311 in words is "three billion, one hundred twenty million, four hundred twenty thousand, three hundred eleven".