103805137 has 6 divisors (see below), whose sum is σ = 104234438. Its totient is φ = 103377504.

The previous prime is 103805069. The next prime is 103805173. The reversal of 103805137 is 731508301.

It can be written as a sum of positive squares in 3 ways, for example, as 2178576 + 101626561 = 1476^2 + 10081^2 .

It is a de Polignac number, because none of the positive numbers 2^k-103805137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103802137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99973 + ... + 101005.

Almost surely, 2^103805137 is an apocalyptic number.

It is an amenable number.

103805137 is a deficient number, since it is larger than the sum of its proper divisors (429301).

103805137 is an frugal number, since it uses more digits than its factorization.

103805137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 1350 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 103805137 is about 10188.4806031125. The cubic root of 103805137 is about 469.9730435724.

The spelling of 103805137 in words is "one hundred three million, eight hundred five thousand, one hundred thirty-seven".