1320103550 has 24 divisors (see below), whose sum is σ = 2599829136. Its totient is φ = 496979840.

The previous prime is 1320103549. The next prime is 1320103559. The reversal of 1320103550 is 553010231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320103559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 775682 + ... + 777381.

It is an arithmetic number, because the mean of its divisors is an integer number (108326214).

Almost surely, 2^1320103550 is an apocalyptic number.

1320103550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1320103550 is a deficient number, since it is larger than the sum of its proper divisors (1279725586).

1320103550 is a wasteful number, since it uses less digits than its factorization.

1320103550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553092 (or 1553087 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 1320103550 is about 36333.2292811966. The cubic root of 1320103550 is about 1096.9899941667.

Adding to 1320103550 its reverse (553010231), we get a palindrome (1873113781).

The spelling of 1320103550 in words is "one billion, three hundred twenty million, one hundred three thousand, five hundred fifty".