4313122421 has 2 divisors, whose sum is σ = 4313122422. Its totient is φ = 4313122420.

The previous prime is 4313122399. The next prime is 4313122423. The reversal of 4313122421 is 1242213134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3707470321 + 605652100 = 60889^2 + 24610^2 .

It is a cyclic number.

It is not a de Polignac number, because 4313122421 - 2³⁰ = 3239380597 is a prime.

Together with 4313122423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4313122423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2156561210 + 2156561211.

It is an arithmetic number, because the mean of its divisors is an integer number (2156561211).

Almost surely, 2^4313122421 is an apocalyptic number.

It is an amenable number.

4313122421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4313122421 is an equidigital number, since it uses as much as digits as its factorization.

4313122421 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 4313122421 is about 65674.3665443375. The cubic root of 4313122421 is about 1627.7858228558.

Adding to 4313122421 its reverse (1242213134), we get a palindrome (5555335555).

The spelling of 4313122421 in words is "four billion, three hundred thirteen million, one hundred twenty-two thousand, four hundred twenty-one".