17431121 has 2 divisors, whose sum is σ = 17431122. Its totient is φ = 17431120.

The previous prime is 17431111. The next prime is 17431157. The reversal of 17431121 is 12113471.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10857025 + 6574096 = 3295^2 + 2564^2 .

It is an emirp because it is prime and its reverse (12113471) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17431121 - 2¹⁰ = 17430097 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 17431093 and 17431102.

It is not a weakly prime, because it can be changed into another prime (17431111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8715560 + 8715561.

It is an arithmetic number, because the mean of its divisors is an integer number (8715561).

Almost surely, 2^17431121 is an apocalyptic number.

It is an amenable number.

17431121 is a deficient number, since it is larger than the sum of its proper divisors (1).

17431121 is an equidigital number, since it uses as much as digits as its factorization.

17431121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 20.

The square root of 17431121 is about 4175.0594007750. The cubic root of 17431121 is about 259.2836345545.

Adding to 17431121 its reverse (12113471), we get a palindrome (29544592).

The spelling of 17431121 in words is "seventeen million, four hundred thirty-one thousand, one hundred twenty-one".