381520305103 has 4 divisors (see below), whose sum is σ = 436023205840. Its totient is φ = 327017404368.

The previous prime is 381520305059. The next prime is 381520305109. The reversal of 381520305103 is 301503025183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381520305103 - 2²⁹ = 380983434191 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 (381520305109) 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, 27251450358 + ... + 27251450371.

It is an arithmetic number, because the mean of its divisors is an integer number (109005801460).

Almost surely, 2^381520305103 is an apocalyptic number.

381520305103 is a deficient number, since it is larger than the sum of its proper divisors (54502900737).

381520305103 is an equidigital number, since it uses as much as digits as its factorization.

381520305103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54502900736.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 381520305103 in words is "three hundred eighty-one billion, five hundred twenty million, three hundred five thousand, one hundred three".