3143331421 has 2 divisors, whose sum is σ = 3143331422. Its totient is φ = 3143331420.

The previous prime is 3143331413. The next prime is 3143331437. The reversal of 3143331421 is 1241333413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2760346521 + 382984900 = 52539^2 + 19570^2 .

It is an emirp because it is prime and its reverse (1241333413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3143331421 - 2³ = 3143331413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3143331491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1571665710 + 1571665711.

It is an arithmetic number, because the mean of its divisors is an integer number (1571665711).

Almost surely, 2^3143331421 is an apocalyptic number.

It is an amenable number.

3143331421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3143331421 is an equidigital number, since it uses as much as digits as its factorization.

3143331421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 25.

The square root of 3143331421 is about 56065.4209027276. The cubic root of 3143331421 is about 1464.8620387504.

Adding to 3143331421 its reverse (1241333413), we get a palindrome (4384664834).

The spelling of 3143331421 in words is "three billion, one hundred forty-three million, three hundred thirty-one thousand, four hundred twenty-one".