4231121 has 2 divisors, whose sum is σ = 4231122. Its totient is φ = 4231120.

The previous prime is 4231111. The next prime is 4231177. The reversal of 4231121 is 1211324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3748096 + 483025 = 1936^2 + 695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4231121 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4231096 and 4231105.

It is not a weakly prime, because it can be changed into another prime (4231111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115560 + 2115561.

It is an arithmetic number, because the mean of its divisors is an integer number (2115561).

Almost surely, 2^4231121 is an apocalyptic number.

It is an amenable number.

4231121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4231121 is an equidigital number, since it uses as much as digits as its factorization.

4231121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 14.

The square root of 4231121 is about 2056.9688864929. The cubic root of 4231121 is about 161.7403884315.

Adding to 4231121 its reverse (1211324), we get a palindrome (5442445).

The spelling of 4231121 in words is "four million, two hundred thirty-one thousand, one hundred twenty-one".