1288372103 has 4 divisors (see below), whose sum is σ = 1288715568. Its totient is φ = 1288028640.

The previous prime is 1288372093. The next prime is 1288372133. The reversal of 1288372103 is 3012738821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3012738821 = 61 ⋅49389161.

It is a cyclic number.

It is not a de Polignac number, because 1288372103 - 2⁴ = 1288372087 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 (1288372133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166043 + ... + 173628.

It is an arithmetic number, because the mean of its divisors is an integer number (322178892).

Almost surely, 2^1288372103 is an apocalyptic number.

1288372103 is a deficient number, since it is larger than the sum of its proper divisors (343465).

1288372103 is an equidigital number, since it uses as much as digits as its factorization.

1288372103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343464.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1288372103 is about 35893.9006378521. The cubic root of 1288372103 is about 1088.1291316846.

The spelling of 1288372103 in words is "one billion, two hundred eighty-eight million, three hundred seventy-two thousand, one hundred three".