1040430217 has 2 divisors, whose sum is σ = 1040430218. Its totient is φ = 1040430216.

The previous prime is 1040430191. The next prime is 1040430233. The reversal of 1040430217 is 7120340401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 891858496 + 148571721 = 29864^2 + 12189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040430217 - 2²³ = 1032041609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1040430247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520215108 + 520215109.

It is an arithmetic number, because the mean of its divisors is an integer number (520215109).

Almost surely, 2^1040430217 is an apocalyptic number.

It is an amenable number.

1040430217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040430217 is an equidigital number, since it uses as much as digits as its factorization.

1040430217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1040430217 is about 32255.7005349442. The cubic root of 1040430217 is about 1013.2990891759.

Adding to 1040430217 its reverse (7120340401), we get a palindrome (8160770618).

The spelling of 1040430217 in words is "one billion, forty million, four hundred thirty thousand, two hundred seventeen".