4311121 has 2 divisors, whose sum is σ = 4311122. Its totient is φ = 4311120.

The previous prime is 4311113. The next prime is 4311127. The reversal of 4311121 is 1211134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3101121 + 1210000 = 1761^2 + 1100^2 .

It is a cyclic number.

It is not a de Polignac number, because 4311121 - 2³ = 4311113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4311127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2155560 + 2155561.

It is an arithmetic number, because the mean of its divisors is an integer number (2155561).

Almost surely, 2^4311121 is an apocalyptic number.

It is an amenable number.

4311121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4311121 is an equidigital number, since it uses as much as digits as its factorization.

4311121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24, while the sum is 13.

The square root of 4311121 is about 2076.3239149998. The cubic root of 4311121 is about 162.7534003063.

Adding to 4311121 its sum of digits (13), we get a palindrome (4311134).

Adding to 4311121 its reverse (1211134), we get a palindrome (5522255).

The spelling of 4311121 in words is "four million, three hundred eleven thousand, one hundred twenty-one".