10200381 has 4 divisors (see below), whose sum is σ = 13600512. Its totient is φ = 6800252.

The previous prime is 10200361. The next prime is 10200403. The reversal of 10200381 is 18300201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18300201 = 3 ⋅6100067.

It is a cyclic number.

It is not a de Polignac number, because 10200381 - 2⁶ = 10200317 is a prime.

It is a super-2 number, since 2×10200381² = 208095545090322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10200381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200301) 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, 1700061 + ... + 1700066.

It is an arithmetic number, because the mean of its divisors is an integer number (3400128).

Almost surely, 2^10200381 is an apocalyptic number.

It is an amenable number.

10200381 is a deficient number, since it is larger than the sum of its proper divisors (3400131).

10200381 is an equidigital number, since it uses as much as digits as its factorization.

10200381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400130.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 10200381 is about 3193.8035318410. The cubic root of 10200381 is about 216.8729887391.

Adding to 10200381 its reverse (18300201), we get a palindrome (28500582).

The spelling of 10200381 in words is "ten million, two hundred thousand, three hundred eighty-one".