10323781 has 4 divisors (see below), whose sum is σ = 11117932. Its totient is φ = 9529632.

The previous prime is 10323779. The next prime is 10323787. The reversal of 10323781 is 18732301.

10323781 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 6974881 + 3348900 = 2641^2 + 1830^2 .

It is a cyclic number.

It is not a de Polignac number, because 10323781 - 2¹ = 10323779 is a prime.

It is a super-2 number, since 2×10323781² = 213160908271922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10323787) 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, 397056 + ... + 397081.

It is an arithmetic number, because the mean of its divisors is an integer number (2779483).

Almost surely, 2^10323781 is an apocalyptic number.

It is an amenable number.

10323781 is a deficient number, since it is larger than the sum of its proper divisors (794151).

10323781 is an equidigital number, since it uses as much as digits as its factorization.

10323781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794150.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 10323781 is about 3213.0641138950. The cubic root of 10323781 is about 217.7440322576.

The spelling of 10323781 in words is "ten million, three hundred twenty-three thousand, seven hundred eighty-one".