1309103091 has 12 divisors (see below), whose sum is σ = 1893999432. Its totient is φ = 871317216.

The previous prime is 1309103057. The next prime is 1309103093. The reversal of 1309103091 is 1903019031.

It is not a de Polignac number, because 1309103091 - 2¹⁸ = 1308840947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1309103093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112321 + ... + 123426.

It is an arithmetic number, because the mean of its divisors is an integer number (157833286).

Almost surely, 2^1309103091 is an apocalyptic number.

1309103091 is a deficient number, since it is larger than the sum of its proper divisors (584896341).

1309103091 is a wasteful number, since it uses less digits than its factorization.

1309103091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236370 (or 236367 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 27.

The square root of 1309103091 is about 36181.5296940304. The cubic root of 1309103091 is about 1093.9344084125.

The spelling of 1309103091 in words is "one billion, three hundred nine million, one hundred three thousand, ninety-one".