103099905 has 32 divisors (see below), whose sum is σ = 187200000. Its totient is φ = 53813376.

The previous prime is 103099903. The next prime is 103099933. The reversal of 103099905 is 509990301.

It is not a de Polignac number, because 103099905 - 2¹ = 103099903 is a prime.

It is a super-2 number, since 2×103099905² = 21259180822018050, 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 103099905.

It is not an unprimeable number, because it can be changed into a prime (103099903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1780 + ... + 14469.

It is an arithmetic number, because the mean of its divisors is an integer number (5850000).

Almost surely, 2^103099905 is an apocalyptic number.

103099905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103099905 is a deficient number, since it is larger than the sum of its proper divisors (84100095).

103099905 is a wasteful number, since it uses less digits than its factorization.

103099905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16310 (or 16304 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 103099905 is about 10153.8123382304. The cubic root of 103099905 is about 468.9063222627.

The spelling of 103099905 in words is "one hundred three million, ninety-nine thousand, nine hundred five".