3131420443 has 2 divisors, whose sum is σ = 3131420444. Its totient is φ = 3131420442.

The previous prime is 3131420441. The next prime is 3131420497. The reversal of 3131420443 is 3440241313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3131420443 - 2¹ = 3131420441 is a prime.

Together with 3131420441, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3131420441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565710221 + 1565710222.

It is an arithmetic number, because the mean of its divisors is an integer number (1565710222).

Almost surely, 2^3131420443 is an apocalyptic number.

3131420443 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131420443 is an equidigital number, since it uses as much as digits as its factorization.

3131420443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 3131420443 is about 55959.0961596057. The cubic root of 3131420443 is about 1463.0094369412.

Adding to 3131420443 its reverse (3440241313), we get a palindrome (6571661756).

The spelling of 3131420443 in words is "three billion, one hundred thirty-one million, four hundred twenty thousand, four hundred forty-three".