1040321213 has 2 divisors, whose sum is σ = 1040321214. Its totient is φ = 1040321212.

The previous prime is 1040321209. The next prime is 1040321221. The reversal of 1040321213 is 3121230401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585010969 + 455310244 = 24187^2 + 21338^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040321213 - 2² = 1040321209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1040321191 and 1040321200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040321203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520160606 + 520160607.

It is an arithmetic number, because the mean of its divisors is an integer number (520160607).

Almost surely, 2^1040321213 is an apocalyptic number.

It is an amenable number.

1040321213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040321213 is an equidigital number, since it uses as much as digits as its factorization.

1040321213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1040321213 is about 32254.0108048596. The cubic root of 1040321213 is about 1013.2637007664.

Adding to 1040321213 its reverse (3121230401), we get a palindrome (4161551614).

The spelling of 1040321213 in words is "one billion, forty million, three hundred twenty-one thousand, two hundred thirteen".