103381813 has 4 divisors (see below), whose sum is σ = 104330380. Its totient is φ = 102433248.

The previous prime is 103381783. The next prime is 103381819. The reversal of 103381813 is 318183301.

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 73153809 + 30228004 = 8553^2 + 5498^2 .

It is a cyclic number.

It is not a de Polignac number, because 103381813 - 2²¹ = 101284661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103381819) 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, 474120 + ... + 474337.

It is an arithmetic number, because the mean of its divisors is an integer number (26082595).

Almost surely, 2^103381813 is an apocalyptic number.

It is an amenable number.

103381813 is a deficient number, since it is larger than the sum of its proper divisors (948567).

103381813 is an equidigital number, since it uses as much as digits as its factorization.

103381813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948566.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 103381813 is about 10167.6847413755. The cubic root of 103381813 is about 469.3333131004. Note that the first 4 decimals are identical.

The spelling of 103381813 in words is "one hundred three million, three hundred eighty-one thousand, eight hundred thirteen".