3120420031 has 2 divisors, whose sum is σ = 3120420032. Its totient is φ = 3120420030.

The previous prime is 3120419999. The next prime is 3120420053. The reversal of 3120420031 is 1300240213.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1300240213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3120420031 - 2⁵ = 3120419999 is a prime.

It is a super-2 number, since 2×3120420031² = 19474042339732081922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3120419987 and 3120420014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3120427031) 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 as a sum of consecutive naturals, namely, 1560210015 + 1560210016.

It is an arithmetic number, because the mean of its divisors is an integer number (1560210016).

Almost surely, 2^3120420031 is an apocalyptic number.

3120420031 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120420031 is an equidigital number, since it uses as much as digits as its factorization.

3120420031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3120420031 is about 55860.7199291237. The cubic root of 3120420031 is about 1461.2942846649.

Adding to 3120420031 its reverse (1300240213), we get a palindrome (4420660244).

The spelling of 3120420031 in words is "three billion, one hundred twenty million, four hundred twenty thousand, thirty-one".