10530813 has 4 divisors (see below), whose sum is σ = 14041088. Its totient is φ = 7020540.

The previous prime is 10530811. The next prime is 10530841. The reversal of 10530813 is 31803501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10530813 - 2¹ = 10530811 is a prime.

It is a super-3 number, since 3×10530813³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10530813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10530811) 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, 1755133 + ... + 1755138.

It is an arithmetic number, because the mean of its divisors is an integer number (3510272).

Almost surely, 2^10530813 is an apocalyptic number.

It is an amenable number.

10530813 is a deficient number, since it is larger than the sum of its proper divisors (3510275).

10530813 is an equidigital number, since it uses as much as digits as its factorization.

10530813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510274.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 10530813 is about 3245.1214152940. The cubic root of 10530813 is about 219.1899480024.

The spelling of 10530813 in words is "ten million, five hundred thirty thousand, eight hundred thirteen".