103311405 has 24 divisors (see below), whose sum is σ = 182886912. Its totient is φ = 53925984.

The previous prime is 103311391. The next prime is 103311407. The reversal of 103311405 is 504113301.

It is not a de Polignac number, because 103311405 - 2⁸ = 103311149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103311407) 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 23 ways as a sum of consecutive naturals, for example, 22309 + ... + 26538.

It is an arithmetic number, because the mean of its divisors is an integer number (7620288).

Almost surely, 2^103311405 is an apocalyptic number.

103311405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103311405 is a deficient number, since it is larger than the sum of its proper divisors (79575507).

103311405 is a wasteful number, since it uses less digits than its factorization.

103311405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48905 (or 48902 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 103311405 is about 10164.2218098583. The cubic root of 103311405 is about 469.2267426973.

Adding to 103311405 its reverse (504113301), we get a palindrome (607424706).

The spelling of 103311405 in words is "one hundred three million, three hundred eleven thousand, four hundred five".