10355381 has 4 divisors (see below), whose sum is σ = 10365132. Its totient is φ = 10345632.

The previous prime is 10355377. The next prime is 10355383. The reversal of 10355381 is 18355301.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18355301 = 709 ⋅25889.

It can be written as a sum of positive squares in 2 ways, for example, as 4431025 + 5924356 = 2105^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 10355381 - 2² = 10355377 is a prime.

It is a super-3 number, since 3×10355381³ (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 10355381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10355383) 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, 3056 + ... + 5481.

It is an arithmetic number, because the mean of its divisors is an integer number (2591283).

Almost surely, 2^10355381 is an apocalyptic number.

It is an amenable number.

10355381 is a deficient number, since it is larger than the sum of its proper divisors (9751).

10355381 is an equidigital number, since it uses as much as digits as its factorization.

10355381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9750.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 10355381 is about 3217.9777811539. The cubic root of 10355381 is about 217.9659697744.

The spelling of 10355381 in words is "ten million, three hundred fifty-five thousand, three hundred eighty-one".