1040321287 has 2 divisors, whose sum is σ = 1040321288. Its totient is φ = 1040321286.

The previous prime is 1040321221. The next prime is 1040321297. The reversal of 1040321287 is 7821230401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1040321287 - 2⁷ = 1040321159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040321207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520160643 + 520160644.

It is an arithmetic number, because the mean of its divisors is an integer number (520160644).

Almost surely, 2^1040321287 is an apocalyptic number.

1040321287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040321287 is an equidigital number, since it uses as much as digits as its factorization.

1040321287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1040321287 is about 32254.0119520037. The cubic root of 1040321287 is about 1013.2637247916.

Adding to 1040321287 its reverse (7821230401), we get a palindrome (8861551688).

The spelling of 1040321287 in words is "one billion, forty million, three hundred twenty-one thousand, two hundred eighty-seven".