1040351321 has 2 divisors, whose sum is σ = 1040351322. Its totient is φ = 1040351320.

The previous prime is 1040351317. The next prime is 1040351339. The reversal of 1040351321 is 1231530401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 843089296 + 197262025 = 29036^2 + 14045^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040351321 - 2² = 1040351317 is a prime.

It is a super-2 number, since 2×1040351321² = 2164661742212890082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1040351293 and 1040351302.

It is not a weakly prime, because it can be changed into another prime (1040351381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520175660 + 520175661.

It is an arithmetic number, because the mean of its divisors is an integer number (520175661).

Almost surely, 2^1040351321 is an apocalyptic number.

It is an amenable number.

1040351321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040351321 is an equidigital number, since it uses as much as digits as its factorization.

1040351321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1040351321 is about 32254.4775341347. The cubic root of 1040351321 is about 1013.2734756478.

Adding to 1040351321 its reverse (1231530401), we get a palindrome (2271881722).

The spelling of 1040351321 in words is "one billion, forty million, three hundred fifty-one thousand, three hundred twenty-one".