4231214321 has 2 divisors, whose sum is σ = 4231214322. Its totient is φ = 4231214320.

The previous prime is 4231214287. The next prime is 4231214341. The reversal of 4231214321 is 1234121324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4140279025 + 90935296 = 64345^2 + 9536^2 .

It is a cyclic number.

It is not a de Polignac number, because 4231214321 - 2¹⁰ = 4231213297 is a prime.

It is not a weakly prime, because it can be changed into another prime (4231214341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115607160 + 2115607161.

It is an arithmetic number, because the mean of its divisors is an integer number (2115607161).

Almost surely, 2^4231214321 is an apocalyptic number.

It is an amenable number.

4231214321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4231214321 is an equidigital number, since it uses as much as digits as its factorization.

4231214321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 4231214321 is about 65047.7849046376. The cubic root of 4231214321 is about 1617.4157753038.

Adding to 4231214321 its reverse (1234121324), we get a palindrome (5465335645).

The spelling of 4231214321 in words is "four billion, two hundred thirty-one million, two hundred fourteen thousand, three hundred twenty-one".