10293781 has 2 divisors, whose sum is σ = 10293782. Its totient is φ = 10293780.

The previous prime is 10293757. The next prime is 10293791. The reversal of 10293781 is 18739201.

10293781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7107556 + 3186225 = 2666^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 10293781 - 2⁵ = 10293749 is a prime.

It is a super-2 number, since 2×10293781² = 211923854551922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10293791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5146890 + 5146891.

It is an arithmetic number, because the mean of its divisors is an integer number (5146891).

Almost surely, 2^10293781 is an apocalyptic number.

It is an amenable number.

10293781 is a deficient number, since it is larger than the sum of its proper divisors (1).

10293781 is an equidigital number, since it uses as much as digits as its factorization.

10293781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 10293781 is about 3208.3922765148. The cubic root of 10293781 is about 217.5329126218.

The spelling of 10293781 in words is "ten million, two hundred ninety-three thousand, seven hundred eighty-one".