10721307 has 4 divisors (see below), whose sum is σ = 14295080. Its totient is φ = 7147536.

The previous prime is 10721297. The next prime is 10721309. The reversal of 10721307 is 70312701.

10721307 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70312701 = 3 ⋅23437567.

It is not a de Polignac number, because 10721307 - 2¹¹ = 10719259 is a prime.

It is a super-2 number, since 2×10721307² = 229892847576498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10721309) 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 in 3 ways as a sum of consecutive naturals, for example, 1786882 + ... + 1786887.

It is an arithmetic number, because the mean of its divisors is an integer number (3573770).

Almost surely, 2^10721307 is an apocalyptic number.

10721307 is a deficient number, since it is larger than the sum of its proper divisors (3573773).

10721307 is an equidigital number, since it uses as much as digits as its factorization.

10721307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573772.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 10721307 is about 3274.3406969954. The cubic root of 10721307 is about 220.5037149533.

The spelling of 10721307 in words is "ten million, seven hundred twenty-one thousand, three hundred seven".