1002320213 has 4 divisors (see below), whose sum is σ = 1005522828. Its totient is φ = 999117600.

The previous prime is 1002320203. The next prime is 1002320227. The reversal of 1002320213 is 3120232001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3120232001 = 7507 ⋅415643.

It can be written as a sum of positive squares in 2 ways, for example, as 409738564 + 592581649 = 20242^2 + 24343^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002320213 - 2¹⁰ = 1002319189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002320203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1600838 + ... + 1601463.

It is an arithmetic number, because the mean of its divisors is an integer number (251380707).

Almost surely, 2^1002320213 is an apocalyptic number.

It is an amenable number.

1002320213 is a deficient number, since it is larger than the sum of its proper divisors (3202615).

1002320213 is an equidigital number, since it uses as much as digits as its factorization.

1002320213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202614.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1002320213 is about 31659.4411353075. The cubic root of 1002320213 is about 1000.7728069489.

Adding to 1002320213 its reverse (3120232001), we get a palindrome (4122552214).

The spelling of 1002320213 in words is "one billion, two million, three hundred twenty thousand, two hundred thirteen".